623957797 has 4 divisors (see below), whose sum is σ = 624038080. Its totient is φ = 623877516.

The previous prime is 623957773. The next prime is 623957809. The reversal of 623957797 is 797759326.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 623957797 - 2⁷ = 623957669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623957297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27063 + ... + 44500.

It is an arithmetic number, because the mean of its divisors is an integer number (156009520).

Almost surely, 2^623957797 is an apocalyptic number.

It is an amenable number.

623957797 is a deficient number, since it is larger than the sum of its proper divisors (80283).

623957797 is an equidigital number, since it uses as much as digits as its factorization.

623957797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80282.

The product of its digits is 5000940, while the sum is 55.

The square root of 623957797 is about 24979.1472432507. The cubic root of 623957797 is about 854.5124710533.

It can be divided in two parts, 623 and 957797, that added together give a triangular number (958420 = T₁₃₈₄).

The spelling of 623957797 in words is "six hundred twenty-three million, nine hundred fifty-seven thousand, seven hundred ninety-seven".