977707 has 4 divisors (see below), whose sum is σ = 1020240. Its totient is φ = 935176.

The previous prime is 977693. The next prime is 977719. The reversal of 977707 is 707779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707779 = 23 ⋅30773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-977707 is a prime.

It is a Duffinian number.

977707 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (977747) 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 3 ways as a sum of consecutive naturals, for example, 21232 + ... + 21277.

It is an arithmetic number, because the mean of its divisors is an integer number (255060).

2⁹⁷⁷⁷⁰⁷ is an apocalyptic number.

977707 is a deficient number, since it is larger than the sum of its proper divisors (42533).

977707 is a wasteful number, since it uses less digits than its factorization.

977707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42532.

The product of its (nonzero) digits is 21609, while the sum is 37.

The square root of 977707 is about 988.7906755224. The cubic root of 977707 is about 99.2513086009.

The spelling of 977707 in words is "nine hundred seventy-seven thousand, seven hundred seven".