624340642 has 4 divisors (see below), whose sum is σ = 936510966. Its totient is φ = 312170320.

The previous prime is 624340631. The next prime is 624340699. The reversal of 624340642 is 246043426.

624340642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 615982761 + 8357881 = 24819^2 + 2891^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156085159 + ... + 156085162.

Almost surely, 2^624340642 is an apocalyptic number.

624340642 is a deficient number, since it is larger than the sum of its proper divisors (312170324).

624340642 is a wasteful number, since it uses less digits than its factorization.

624340642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312170323.

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 624340642 is about 24986.8093601404. The cubic root of 624340642 is about 854.6872045272.

The spelling of 624340642 in words is "six hundred twenty-four million, three hundred forty thousand, six hundred forty-two".