623512465 has 4 divisors (see below), whose sum is σ = 748214964. Its totient is φ = 498809968.

The previous prime is 623512429. The next prime is 623512529. The reversal of 623512465 is 564215326.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218537089 + 404975376 = 14783^2 + 20124^2 .

It is a cyclic number.

It is not a de Polignac number, because 623512465 - 2¹¹ = 623510417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623512465.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62351242 + ... + 62351251.

It is an arithmetic number, because the mean of its divisors is an integer number (187053741).

Almost surely, 2^623512465 is an apocalyptic number.

It is an amenable number.

623512465 is a deficient number, since it is larger than the sum of its proper divisors (124702499).

623512465 is a wasteful number, since it uses less digits than its factorization.

623512465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124702498.

The product of its digits is 43200, while the sum is 34.

The square root of 623512465 is about 24970.2315768196. The cubic root of 623512465 is about 854.3091280713.

The spelling of 623512465 in words is "six hundred twenty-three million, five hundred twelve thousand, four hundred sixty-five".