624670997 has 2 divisors, whose sum is σ = 624670998. Its totient is φ = 624670996.

The previous prime is 624670939. The next prime is 624671041. The reversal of 624670997 is 799076426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616975921 + 7695076 = 24839^2 + 2774^2 .

It is a cyclic number.

It is not a de Polignac number, because 624670997 - 2²⁶ = 557562133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624670097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312335498 + 312335499.

It is an arithmetic number, because the mean of its divisors is an integer number (312335499).

Almost surely, 2^624670997 is an apocalyptic number.

It is an amenable number.

624670997 is a deficient number, since it is larger than the sum of its proper divisors (1).

624670997 is an equidigital number, since it uses as much as digits as its factorization.

624670997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 624670997 is about 24993.4190738282. The cubic root of 624670997 is about 854.8379237486.

The spelling of 624670997 in words is "six hundred twenty-four million, six hundred seventy thousand, nine hundred ninety-seven".