77000007 has 16 divisors (see below), whose sum is σ = 117501440. Its totient is φ = 43936992.

The previous prime is 77000003. The next prime is 77000029. The reversal of 77000007 is 70000077.

It is not a de Polignac number, because 77000007 - 2² = 77000003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77000003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15198 + ... + 19620.

It is an arithmetic number, because the mean of its divisors is an integer number (7343840).

Almost surely, 2^77000007 is an apocalyptic number.

77000007 is a deficient number, since it is larger than the sum of its proper divisors (40501433).

77000007 is a wasteful number, since it uses less digits than its factorization.

77000007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262.

The product of its (nonzero) digits is 343, while the sum is 21.

The square root of 77000007 is about 8774.9647862541. The cubic root of 77000007 is about 425.4320994034.

The spelling of 77000007 in words is "seventy-seven million, seven", and thus it is an aban number and an uban number.