77672823 has 8 divisors (see below), whose sum is σ = 103620336. Its totient is φ = 51753600.

The previous prime is 77672807. The next prime is 77672857. The reversal of 77672823 is 32827677.

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

It is not a de Polignac number, because 77672823 - 2⁴ = 77672807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77672873) 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 7 ways as a sum of consecutive naturals, for example, 493 + ... + 12473.

It is an arithmetic number, because the mean of its divisors is an integer number (12952542).

Almost surely, 2^77672823 is an apocalyptic number.

77672823 is a deficient number, since it is larger than the sum of its proper divisors (25947513).

77672823 is a wasteful number, since it uses less digits than its factorization.

77672823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14145.

The product of its digits is 197568, while the sum is 42.

The square root of 77672823 is about 8813.2186515484. The cubic root of 77672823 is about 426.6676310878.

The spelling of 77672823 in words is "seventy-seven million, six hundred seventy-two thousand, eight hundred twenty-three".