623715406 has 4 divisors (see below), whose sum is σ = 935573112. Its totient is φ = 311857702.

The previous prime is 623715377. The next prime is 623715419. The reversal of 623715406 is 604517326.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155928850 + ... + 155928853.

It is an arithmetic number, because the mean of its divisors is an integer number (233893278).

Almost surely, 2^623715406 is an apocalyptic number.

623715406 is a deficient number, since it is larger than the sum of its proper divisors (311857706).

623715406 is a wasteful number, since it uses less digits than its factorization.

623715406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311857705.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 623715406 is about 24974.2949049618. The cubic root of 623715406 is about 854.4018049366.

The spelling of 623715406 in words is "six hundred twenty-three million, seven hundred fifteen thousand, four hundred six".