612825638 has 8 divisors (see below), whose sum is σ = 919710288. Its totient is φ = 306255544.

The previous prime is 612825611. The next prime is 612825667. The reversal of 612825638 is 836528216.

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 = 612825595 and 612825604.

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, 73706 + ... + 81597.

It is an arithmetic number, because the mean of its divisors is an integer number (114963786).

Almost surely, 2^612825638 is an apocalyptic number.

612825638 is a deficient number, since it is larger than the sum of its proper divisors (306884650).

612825638 is a wasteful number, since it uses less digits than its factorization.

612825638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157278.

The product of its digits is 138240, while the sum is 41.

The square root of 612825638 is about 24755.3153484257. The cubic root of 612825638 is about 849.4001017427.

The spelling of 612825638 in words is "six hundred twelve million, eight hundred twenty-five thousand, six hundred thirty-eight".