77976797 has 8 divisors (see below), whose sum is σ = 80197632. Its totient is φ = 75762000.

The previous prime is 77976761. The next prime is 77976803. The reversal of 77976797 is 79767977.

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

It is a cyclic number.

It is not a de Polignac number, because 77976797 - 2⁶ = 77976733 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 (77976707) 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, 41672 + ... + 43502.

It is an arithmetic number, because the mean of its divisors is an integer number (10024704).

Almost surely, 2^77976797 is an apocalyptic number.

It is an amenable number.

77976797 is a deficient number, since it is larger than the sum of its proper divisors (2220835).

77976797 is a wasteful number, since it uses less digits than its factorization.

77976797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its digits is 8168202, while the sum is 59.

The square root of 77976797 is about 8830.4471574207. The cubic root of 77976797 is about 427.2234970880.

The spelling of 77976797 in words is "seventy-seven million, nine hundred seventy-six thousand, seven hundred ninety-seven".