61319886 has 16 divisors (see below), whose sum is σ = 127972224. Its totient is φ = 19551224.

The previous prime is 61319861. The next prime is 61319893. The reversal of 61319886 is 68891316.

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, 222036 + ... + 222311.

It is an arithmetic number, because the mean of its divisors is an integer number (7998264).

Almost surely, 2^61319886 is an apocalyptic number.

61319886 is an abundant number, since it is smaller than the sum of its proper divisors (66652338).

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

61319886 is a wasteful number, since it uses less digits than its factorization.

61319886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444375.

The product of its digits is 62208, while the sum is 42.

The square root of 61319886 is about 7830.7015011428. The cubic root of 61319886 is about 394.3366229987.

The spelling of 61319886 in words is "sixty-one million, three hundred nineteen thousand, eight hundred eighty-six".