977797 has 8 divisors (see below), whose sum is σ = 1049760. Its totient is φ = 907920.

The previous prime is 977791. The next prime is 977803. The reversal of 977797 is 797779.

It is an interprime number because it is at equal distance from previous prime (977791) and next prime (977803).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-977797 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977791) 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, 522 + ... + 1492.

It is an arithmetic number, because the mean of its divisors is an integer number (131220).

2⁹⁷⁷⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

977797 is a deficient number, since it is larger than the sum of its proper divisors (71963).

977797 is a wasteful number, since it uses less digits than its factorization.

977797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043.

The product of its digits is 194481, while the sum is 46.

The square root of 977797 is about 988.8361846130. The cubic root of 977797 is about 99.2543539385.

The spelling of 977797 in words is "nine hundred seventy-seven thousand, seven hundred ninety-seven".