1977323 has 2 divisors, whose sum is σ = 1977324. Its totient is φ = 1977322.

The previous prime is 1977319. The next prime is 1977329. The reversal of 1977323 is 3237791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1977323 - 2² = 1977319 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1977323.

It is not a weakly prime, because it can be changed into another prime (1977329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988661 + 988662.

It is an arithmetic number, because the mean of its divisors is an integer number (988662).

2^1977323 is an apocalyptic number.

1977323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1977323 is an equidigital number, since it uses as much as digits as its factorization.

1977323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 32.

The square root of 1977323 is about 1406.1731756793. The cubic root of 1977323 is about 125.5141066560.

The spelling of 1977323 in words is "one million, nine hundred seventy-seven thousand, three hundred twenty-three".