612950639 has 16 divisors (see below), whose sum is σ = 713654016. Its totient is φ = 515592000.

The previous prime is 612950627. The next prime is 612950669. The reversal of 612950639 is 936059216.

It is not a de Polignac number, because 612950639 - 2¹⁶ = 612885103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612950596 and 612950605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612950609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129464 + ... + 134114.

It is an arithmetic number, because the mean of its divisors is an integer number (44603376).

Almost surely, 2^612950639 is an apocalyptic number.

612950639 is a deficient number, since it is larger than the sum of its proper divisors (100703377).

612950639 is a wasteful number, since it uses less digits than its factorization.

612950639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 612950639 is about 24757.8399502057. The cubic root of 612950639 is about 849.4578498944.

The spelling of 612950639 in words is "six hundred twelve million, nine hundred fifty thousand, six hundred thirty-nine".