8215497 has 12 divisors (see below), whose sum is σ = 12276420. Its totient is φ = 5287968.

The previous prime is 8215469. The next prime is 8215507. The reversal of 8215497 is 7945128.

It can be written as a sum of positive squares in 2 ways, for example, as 4888521 + 3326976 = 2211^2 + 1824^2 .

It is not a de Polignac number, because 8215497 - 2¹⁹ = 7691209 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

8215497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8215397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15478 + ... + 15999.

It is an arithmetic number, because the mean of its divisors is an integer number (1023035).

Almost surely, 2^8215497 is an apocalyptic number.

8215497 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

8215497 is a deficient number, since it is larger than the sum of its proper divisors (4060923).

8215497 is a wasteful number, since it uses less digits than its factorization.

8215497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31512 (or 31509 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 8215497 is about 2866.2688289831. The cubic root of 8215497 is about 201.7799207523.

The spelling of 8215497 in words is "eight million, two hundred fifteen thousand, four hundred ninety-seven".