61136766 has 12 divisors (see below), whose sum is σ = 132463032. Its totient is φ = 20378916.

The previous prime is 61136759. The next prime is 61136791. The reversal of 61136766 is 66763116.

61136766 = 3908² + 3909² + ... + 3911².

61136766 is a `hidden beast` number, since 611 + 36 + 7 + 6 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61136766.

It is a congruent number.

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, 1698226 + ... + 1698261.

It is an arithmetic number, because the mean of its divisors is an integer number (11038586).

Almost surely, 2^61136766 is an apocalyptic number.

61136766 is an abundant number, since it is smaller than the sum of its proper divisors (71326266).

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

61136766 is a wasteful number, since it uses less digits than its factorization.

61136766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396495 (or 3396492 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 61136766 is about 7819.0003197340. Note that the first 3 decimals coincide. The cubic root of 61136766 is about 393.9436948752.

The spelling of 61136766 in words is "sixty-one million, one hundred thirty-six thousand, seven hundred sixty-six".