77690674 has 4 divisors (see below), whose sum is σ = 116536014. Its totient is φ = 38845336.

The previous prime is 77690653. The next prime is 77690687. The reversal of 77690674 is 47609677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47609677 = 29 ⋅1641713.

It can be written as a sum of positive squares in only one way, i.e., 66178225 + 11512449 = 8135^2 + 3393^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19422667 + ... + 19422670.

Almost surely, 2^77690674 is an apocalyptic number.

77690674 is a deficient number, since it is larger than the sum of its proper divisors (38845340).

77690674 is a wasteful number, since it uses less digits than its factorization.

77690674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38845339.

The product of its (nonzero) digits is 444528, while the sum is 46.

The square root of 77690674 is about 8814.2313334743. The cubic root of 77690674 is about 426.7003145936.

The spelling of 77690674 in words is "seventy-seven million, six hundred ninety thousand, six hundred seventy-four".