612736506 has 12 divisors (see below), whose sum is σ = 1327595802. Its totient is φ = 204245496.

The previous prime is 612736499. The next prime is 612736547. The reversal of 612736506 is 605637216.

612736506 is a `hidden beast` number, since 612 + 7 + 36 + 5 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 565250625 + 47485881 = 23775^2 + 6891^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17020441 + ... + 17020476.

Almost surely, 2^612736506 is an apocalyptic number.

612736506 is an abundant number, since it is smaller than the sum of its proper divisors (714859296).

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

612736506 is a wasteful number, since it uses less digits than its factorization.

612736506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040925 (or 34040922 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 612736506 is about 24753.5150231235. The cubic root of 612736506 is about 849.3589196097.

The spelling of 612736506 in words is "six hundred twelve million, seven hundred thirty-six thousand, five hundred six".