77716893 has 8 divisors (see below), whose sum is σ = 103665888. Its totient is φ = 51789584.

The previous prime is 77716889. The next prime is 77716901. The reversal of 77716893 is 39861777.

It is a happy number.

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 77716893 - 2² = 77716889 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77716883) 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, 7030 + ... + 14312.

It is an arithmetic number, because the mean of its divisors is an integer number (12958236).

Almost surely, 2^77716893 is an apocalyptic number.

It is an amenable number.

77716893 is a deficient number, since it is larger than the sum of its proper divisors (25948995).

77716893 is a wasteful number, since it uses less digits than its factorization.

77716893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843.

The product of its digits is 444528, while the sum is 48.

The square root of 77716893 is about 8815.7185186461. The cubic root of 77716893 is about 426.7483100464.

The spelling of 77716893 in words is "seventy-seven million, seven hundred sixteen thousand, eight hundred ninety-three".