61953740 has 12 divisors (see below), whose sum is σ = 130102896. Its totient is φ = 24781488.

The previous prime is 61953733. The next prime is 61953757. The reversal of 61953740 is 4735916.

It is a self number, because there is not a number n which added to its sum of digits gives 61953740.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1548824 + ... + 1548863.

It is an arithmetic number, because the mean of its divisors is an integer number (10841908).

Almost surely, 2^61953740 is an apocalyptic number.

It is an amenable number.

61953740 is an abundant number, since it is smaller than the sum of its proper divisors (68149156).

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

61953740 is a wasteful number, since it uses less digits than its factorization.

61953740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097696 (or 3097694 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 61953740 is about 7871.0698129289. The cubic root of 61953740 is about 395.6906998812.

The spelling of 61953740 in words is "sixty-one million, nine hundred fifty-three thousand, seven hundred forty".