624910961 has 2 divisors, whose sum is σ = 624910962. Its totient is φ = 624910960.

The previous prime is 624910861. The next prime is 624910967. The reversal of 624910961 is 169019426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418816225 + 206094736 = 20465^2 + 14356^2 .

It is a cyclic number.

It is not a de Polignac number, because 624910961 - 2¹⁰ = 624909937 is a prime.

It is not a weakly prime, because it can be changed into another prime (624910967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312455480 + 312455481.

It is an arithmetic number, because the mean of its divisors is an integer number (312455481).

Almost surely, 2^624910961 is an apocalyptic number.

It is an amenable number.

624910961 is a deficient number, since it is larger than the sum of its proper divisors (1).

624910961 is an equidigital number, since it uses as much as digits as its factorization.

624910961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 624910961 is about 24998.2191565719. The cubic root of 624910961 is about 854.9473701973.

The spelling of 624910961 in words is "six hundred twenty-four million, nine hundred ten thousand, nine hundred sixty-one".