61625730 has 32 divisors (see below), whose sum is σ = 148267584. Its totient is φ = 16392896.

The previous prime is 61625701. The next prime is 61625743. The reversal of 61625730 is 3752616.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10972 + ... + 15608.

It is an arithmetic number, because the mean of its divisors is an integer number (4633362).

Almost surely, 2^61625730 is an apocalyptic number.

61625730 is an abundant number, since it is smaller than the sum of its proper divisors (86641854).

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

61625730 is a wasteful number, since it uses less digits than its factorization.

61625730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 61625730 is about 7850.2057297882. The cubic root of 61625730 is about 394.9911443830.

The spelling of 61625730 in words is "sixty-one million, six hundred twenty-five thousand, seven hundred thirty".