612736 has 16 divisors (see below), whose sum is σ = 1220940. Its totient is φ = 306304.

The previous prime is 612727. The next prime is 612737. The reversal of 612736 is 637216.

612736 is nontrivially palindromic in base 5.

It is a tau number, because it is divible by the number of its divisors (16).

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 612736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2266 + ... + 2521.

2⁶¹²⁷³⁶ is an apocalyptic number.

It is an amenable number.

612736 is a deficient number, since it is larger than the sum of its proper divisors (608204).

612736 is an equidigital number, since it uses as much as digits as its factorization.

612736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801 (or 4789 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 612736 is about 782.7745524734. The cubic root of 612736 is about 84.9358685808.

The spelling of 612736 in words is "six hundred twelve thousand, seven hundred thirty-six".