61320986 has 8 divisors (see below), whose sum is σ = 92394624. Its totient is φ = 30522780.

The previous prime is 61320983. The next prime is 61320991. The reversal of 61320986 is 68902316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61320983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68300 + ... + 69191.

It is an arithmetic number, because the mean of its divisors is an integer number (11549328).

Almost surely, 2^61320986 is an apocalyptic number.

61320986 is a deficient number, since it is larger than the sum of its proper divisors (31073638).

61320986 is a wasteful number, since it uses less digits than its factorization.

61320986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137716.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 61320986 is about 7830.7717371917. The cubic root of 61320986 is about 394.3389809488.

The spelling of 61320986 in words is "sixty-one million, three hundred twenty thousand, nine hundred eighty-six".