61780914 has 32 divisors (see below), whose sum is σ = 147853440. Its totient is φ = 19009296.

The previous prime is 61780883. The next prime is 61780919. The reversal of 61780914 is 41908716.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61780919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43302 + ... + 44705.

It is an arithmetic number, because the mean of its divisors is an integer number (4620420).

Almost surely, 2^61780914 is an apocalyptic number.

61780914 is an abundant number, since it is smaller than the sum of its proper divisors (86072526).

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

61780914 is a wasteful number, since it uses less digits than its factorization.

61780914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88031 (or 88025 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 61780914 is about 7860.0835873418. The cubic root of 61780914 is about 395.3224179497.

The spelling of 61780914 in words is "sixty-one million, seven hundred eighty thousand, nine hundred fourteen".