61396780 has 24 divisors (see below), whose sum is σ = 129553200. Its totient is φ = 24440640.

The previous prime is 61396703. The next prime is 61396781. The reversal of 61396780 is 8769316.

It is not an unprimeable number, because it can be changed into a prime (61396781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3055 + ... + 11494.

It is an arithmetic number, because the mean of its divisors is an integer number (5398050).

Almost surely, 2^61396780 is an apocalyptic number.

It is an amenable number.

61396780 is an abundant number, since it is smaller than the sum of its proper divisors (68156420).

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

61396780 is a wasteful number, since it uses less digits than its factorization.

61396780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14769 (or 14767 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 61396780 is about 7835.6097401542. The cubic root of 61396780 is about 394.5013844197.

The spelling of 61396780 in words is "sixty-one million, three hundred ninety-six thousand, seven hundred eighty".