61956380 has 24 divisors (see below), whose sum is σ = 130330032. Its totient is φ = 24740352.

The previous prime is 61956379. The next prime is 61956403. The reversal of 61956380 is 8365916.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 11159 + ... + 15761.

It is an arithmetic number, because the mean of its divisors is an integer number (5430418).

Almost surely, 2^61956380 is an apocalyptic number.

It is an amenable number.

61956380 is an abundant number, since it is smaller than the sum of its proper divisors (68373652).

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

61956380 is a wasteful number, since it uses less digits than its factorization.

61956380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285 (or 5283 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 61956380 is about 7871.2375138856. The cubic root of 61956380 is about 395.6963202500.

The spelling of 61956380 in words is "sixty-one million, nine hundred fifty-six thousand, three hundred eighty".