61953960 has 32 divisors (see below), whose sum is σ = 185862240. Its totient is φ = 16521024.

The previous prime is 61953959. The next prime is 61953989. The reversal of 61953960 is 6935916.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258022 + ... + 258261.

It is an arithmetic number, because the mean of its divisors is an integer number (5808195).

Almost surely, 2^61953960 is an apocalyptic number.

61953960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61953960 is an abundant number, since it is smaller than the sum of its proper divisors (123908280).

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

61953960 is a wasteful number, since it uses less digits than its factorization.

61953960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516297 (or 516293 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 61953960 is about 7871.0837881451. The cubic root of 61953960 is about 395.6911682514.

The spelling of 61953960 in words is "sixty-one million, nine hundred fifty-three thousand, nine hundred sixty".