661006116 has 24 divisors (see below), whose sum is σ = 1713719840. Its totient is φ = 220335336.

The previous prime is 661006111. The next prime is 661006123. The reversal of 661006116 is 611600166.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 661006116.

It is not an unprimeable number, because it can be changed into a prime (661006111) 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, 3060106 + ... + 3060321.

Almost surely, 2^661006116 is an apocalyptic number.

It is an amenable number.

661006116 is an abundant number, since it is smaller than the sum of its proper divisors (1052713724).

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

661006116 is a wasteful number, since it uses less digits than its factorization.

661006116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120440 (or 6120432 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 661006116 is about 25710.0392065045. The cubic root of 661006116 is about 871.1009605178.

The spelling of 661006116 in words is "six hundred sixty-one million, six thousand, one hundred sixteen".