972777 has 8 divisors (see below), whose sum is σ = 1396864. Its totient is φ = 598608.

The previous prime is 972721. The next prime is 972787. The reversal of 972777 is 777279.

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

It is not a de Polignac number, because 972777 - 2⁷ = 972649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 24943 = 972777 / (9 + 7 + 2 + 7 + 7 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972787) 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, 12433 + ... + 12510.

It is an arithmetic number, because the mean of its divisors is an integer number (174608).

2⁹⁷²⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

972777 is a deficient number, since it is larger than the sum of its proper divisors (424087).

972777 is a wasteful number, since it uses less digits than its factorization.

972777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24959.

The product of its digits is 43218, while the sum is 39.

The square root of 972777 is about 986.2945807415. The cubic root of 972777 is about 99.0842054724.

The spelling of 972777 in words is "nine hundred seventy-two thousand, seven hundred seventy-seven".