77070070 has 64 divisors (see below), whose sum is σ = 174845952. Its totient is φ = 23760000.

The previous prime is 77070031. The next prime is 77070073. The reversal of 77070070 is 7007077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77070073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77275 + ... + 78265.

It is an arithmetic number, because the mean of its divisors is an integer number (2731968).

Almost surely, 2^77070070 is an apocalyptic number.

77070070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77070070 is an abundant number, since it is smaller than the sum of its proper divisors (97775882).

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

77070070 is a wasteful number, since it uses less digits than its factorization.

77070070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117.

The product of its (nonzero) digits is 2401, while the sum is 28.

The square root of 77070070 is about 8778.9560882829. The cubic root of 77070070 is about 425.5610951197.

The spelling of 77070070 in words is "seventy-seven million, seventy thousand, seventy".