7640371 has 2 divisors, whose sum is σ = 7640372. Its totient is φ = 7640370.

The previous prime is 7640363. The next prime is 7640377. The reversal of 7640371 is 1730467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7640371 - 2³ = 7640363 is a prime.

It is an Ulam number.

7640371 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7640377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820185 + 3820186.

It is an arithmetic number, because the mean of its divisors is an integer number (3820186).

Almost surely, 2^7640371 is an apocalyptic number.

7640371 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640371 is an equidigital number, since it uses as much as digits as its factorization.

7640371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 7640371 is about 2764.1221029470. The cubic root of 7640371 is about 196.9570280841.

The spelling of 7640371 in words is "seven million, six hundred forty thousand, three hundred seventy-one".