77447016 has 48 divisors (see below), whose sum is σ = 217526400. Its totient is φ = 25815024.

The previous prime is 77447009. The next prime is 77447077. The reversal of 77447016 is 61074477.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17976 + ... + 21863.

It is an arithmetic number, because the mean of its divisors is an integer number (4531800).

Almost surely, 2^77447016 is an apocalyptic number.

It is an amenable number.

77447016 is an abundant number, since it is smaller than the sum of its proper divisors (140079384).

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

77447016 is a wasteful number, since it uses less digits than its factorization.

77447016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39860 (or 39844 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 77447016 is about 8800.3986273350. The cubic root of 77447016 is about 426.2537666755.

The spelling of 77447016 in words is "seventy-seven million, four hundred forty-seven thousand, sixteen".