61764156 has 36 divisors (see below), whose sum is σ = 157651312. Its totient is φ = 20386944.

The previous prime is 61764149. The next prime is 61764167. The reversal of 61764156 is 65146716.

61764156 is a `hidden beast` number, since 6 + 1 + 7 + 641 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61764156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4621 + ... + 12036.

Almost surely, 2^61764156 is an apocalyptic number.

It is an amenable number.

61764156 is an abundant number, since it is smaller than the sum of its proper divisors (95887156).

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

61764156 is a wasteful number, since it uses less digits than its factorization.

61764156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770 (or 16765 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 61764156 is about 7859.0174958451. The cubic root of 61764156 is about 395.2866711376.

The spelling of 61764156 in words is "sixty-one million, seven hundred sixty-four thousand, one hundred fifty-six".