612764638 has 8 divisors (see below), whose sum is σ = 919598688. Its totient is φ = 306231744.

The previous prime is 612764629. The next prime is 612764651. The reversal of 612764638 is 836467216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 612764594 and 612764603.

It is a congruent number.

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, 70131 + ... + 78382.

It is an arithmetic number, because the mean of its divisors is an integer number (114949836).

Almost surely, 2^612764638 is an apocalyptic number.

612764638 is a deficient number, since it is larger than the sum of its proper divisors (306834050).

612764638 is a wasteful number, since it uses less digits than its factorization.

612764638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150578.

The product of its digits is 290304, while the sum is 43.

The square root of 612764638 is about 24754.0832591312. The cubic root of 612764638 is about 849.3719180189.

The spelling of 612764638 in words is "six hundred twelve million, seven hundred sixty-four thousand, six hundred thirty-eight".