612538100 has 18 divisors (see below), whose sum is σ = 1329207894. Its totient is φ = 245015200.

The previous prime is 612538099. The next prime is 612538117. The reversal of 612538100 is 1835216.

It can be written as a sum of positive squares in 3 ways, for example, as 10719076 + 601819024 = 3274^2 + 24532^2 .

It is a super-2 number, since 2×612538100² = 750405847903220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 612538100.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3062591 + ... + 3062790.

It is an arithmetic number, because the mean of its divisors is an integer number (73844883).

Almost surely, 2^612538100 is an apocalyptic number.

It is an amenable number.

612538100 is an abundant number, since it is smaller than the sum of its proper divisors (716669794).

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

612538100 is a wasteful number, since it uses less digits than its factorization.

612538100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6125395 (or 6125388 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 612538100 is about 24749.5070657983. The cubic root of 612538100 is about 849.2672346868.

The spelling of 612538100 in words is "six hundred twelve million, five hundred thirty-eight thousand, one hundred".