77690673 has 6 divisors (see below), whose sum is σ = 112219874. Its totient is φ = 51793776.

The previous prime is 77690653. The next prime is 77690687. The reversal of 77690673 is 37609677.

It can be written as a sum of positive squares in only one way, i.e., 70006689 + 7683984 = 8367^2 + 2772^2 .

It is not a de Polignac number, because 77690673 - 2¹² = 77686577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77690603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4316140 + ... + 4316157.

Almost surely, 2^77690673 is an apocalyptic number.

It is an amenable number.

77690673 is a deficient number, since it is larger than the sum of its proper divisors (34529201).

77690673 is a wasteful number, since it uses less digits than its factorization.

77690673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8632303 (or 8632300 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 45.

The square root of 77690673 is about 8814.2312767478. The cubic root of 77690673 is about 426.7003127628.

The spelling of 77690673 in words is "seventy-seven million, six hundred ninety thousand, six hundred seventy-three".