612557436 has 24 divisors (see below), whose sum is σ = 1491444864. Its totient is φ = 195308080.

The previous prime is 612557431. The next prime is 612557443. The reversal of 612557436 is 634755216.

It is a super-2 number, since 2×612557436² = 750453224797788192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 612557394 and 612557403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612557431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109430 + ... + 1109981.

It is an arithmetic number, because the mean of its divisors is an integer number (62143536).

Almost surely, 2^612557436 is an apocalyptic number.

It is an amenable number.

612557436 is an abundant number, since it is smaller than the sum of its proper divisors (878887428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612557436 is a wasteful number, since it uses less digits than its factorization.

612557436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219441 (or 2219439 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 612557436 is about 24749.8976967583. The cubic root of 612557436 is about 849.2761708703.

The spelling of 612557436 in words is "six hundred twelve million, five hundred fifty-seven thousand, four hundred thirty-six".