77870673 has 16 divisors (see below), whose sum is σ = 116389440. Its totient is φ = 51452352.

The previous prime is 77870657. The next prime is 77870677. The reversal of 77870673 is 37607877.

It is not a de Polignac number, because 77870673 - 2⁴ = 77870657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77870677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9711 + ... + 15812.

It is an arithmetic number, because the mean of its divisors is an integer number (7274340).

Almost surely, 2^77870673 is an apocalyptic number.

It is an amenable number.

77870673 is a deficient number, since it is larger than the sum of its proper divisors (38518767).

77870673 is a wasteful number, since it uses less digits than its factorization.

77870673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25645 (or 25639 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 77870673 is about 8824.4361292946. The cubic root of 77870673 is about 427.0295964582.

The spelling of 77870673 in words is "seventy-seven million, eight hundred seventy thousand, six hundred seventy-three".