77969007 has 8 divisors (see below), whose sum is σ = 115509680. Its totient is φ = 51979320.

The previous prime is 77968997. The next prime is 77969009. The reversal of 77969007 is 70096977.

It is not a de Polignac number, because 77969007 - 2⁴ = 77968991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77969009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1443844 + ... + 1443897.

It is an arithmetic number, because the mean of its divisors is an integer number (14438710).

Almost surely, 2^77969007 is an apocalyptic number.

77969007 is a deficient number, since it is larger than the sum of its proper divisors (37540673).

77969007 is a wasteful number, since it uses less digits than its factorization.

77969007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887750 (or 2887744 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 77969007 is about 8830.0060588881. The cubic root of 77969007 is about 427.2092698563.

The spelling of 77969007 in words is "seventy-seven million, nine hundred sixty-nine thousand, seven".