1661014064 has 80 divisors (see below), whose sum is σ = 3398407488. Its totient is φ = 785581056.

The previous prime is 1661013967. The next prime is 1661014073. The reversal of 1661014064 is 4604101661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5239634 + ... + 5239950.

Almost surely, 2^1661014064 is an apocalyptic number.

It is an amenable number.

1661014064 is an abundant number, since it is smaller than the sum of its proper divisors (1737393424).

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

1661014064 is a wasteful number, since it uses less digits than its factorization.

1661014064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1661014064 is about 40755.5402859538. The cubic root of 1661014064 is about 1184.2892030024.

The spelling of 1661014064 in words is "one billion, six hundred sixty-one million, fourteen thousand, sixty-four".