77690751 has 8 divisors (see below), whose sum is σ = 103635840. Its totient is φ = 51769752.

The previous prime is 77690749. The next prime is 77690773. The reversal of 77690751 is 15709677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77690751 - 2¹ = 77690749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77692751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3790 + ... + 13028.

It is an arithmetic number, because the mean of its divisors is an integer number (12954480).

Almost surely, 2^77690751 is an apocalyptic number.

77690751 is a deficient number, since it is larger than the sum of its proper divisors (25945089).

77690751 is a wasteful number, since it uses less digits than its factorization.

77690751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12045.

The product of its (nonzero) digits is 92610, while the sum is 42.

The square root of 77690751 is about 8814.2357014094. The cubic root of 77690751 is about 426.7004555625.

The spelling of 77690751 in words is "seventy-seven million, six hundred ninety thousand, seven hundred fifty-one".