61506700 has 18 divisors (see below), whose sum is σ = 133469756. Its totient is φ = 24602640.

The previous prime is 61506689. The next prime is 61506701. The reversal of 61506700 is 760516.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (61506701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307434 + ... + 307633.

Almost surely, 2^61506700 is an apocalyptic number.

It is an amenable number.

61506700 is an abundant number, since it is smaller than the sum of its proper divisors (71963056).

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

61506700 is a wasteful number, since it uses less digits than its factorization.

61506700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615081 (or 615074 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 61506700 is about 7842.6207354430. The cubic root of 61506700 is about 394.7366722183.

The spelling of 61506700 in words is "sixty-one million, five hundred six thousand, seven hundred".