612533400 has 96 divisors (see below), whose sum is σ = 1998830400. Its totient is φ = 154742400.

The previous prime is 612533393. The next prime is 612533413. The reversal of 612533400 is 4335216.

It is a happy number.

It is a super-2 number, since 2×612533400² = 750394332231120000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15466 + ... + 38265.

It is an arithmetic number, because the mean of its divisors is an integer number (20821150).

Almost surely, 2^612533400 is an apocalyptic number.

612533400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612533400 is an abundant number, since it is smaller than the sum of its proper divisors (1386297000).

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

612533400 is a wasteful number, since it uses less digits than its factorization.

612533400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53769 (or 53760 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 612533400 is about 24749.4121142301. The cubic root of 612533400 is about 849.2650625410.

Adding to 612533400 its reverse (4335216), we get a palindrome (616868616).

The spelling of 612533400 in words is "six hundred twelve million, five hundred thirty-three thousand, four hundred".