612996538 has 32 divisors (see below), whose sum is σ = 1177377408. Its totient is φ = 232372800.

The previous prime is 612996491. The next prime is 612996541. The reversal of 612996538 is 835699216.

It is a junction number, because it is equal to n+sod(n) for n = 612996491 and 612996500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48093 + ... + 59488.

It is an arithmetic number, because the mean of its divisors is an integer number (36793044).

Almost surely, 2^612996538 is an apocalyptic number.

612996538 is a deficient number, since it is larger than the sum of its proper divisors (564380870).

612996538 is a wasteful number, since it uses less digits than its factorization.

612996538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107638.

The product of its digits is 699840, while the sum is 49.

The square root of 612996538 is about 24758.7668917497. The cubic root of 612996538 is about 849.4790524134.

The spelling of 612996538 in words is "six hundred twelve million, nine hundred ninety-six thousand, five hundred thirty-eight".