977287 has 4 divisors (see below), whose sum is σ = 979336. Its totient is φ = 975240.

The previous prime is 977269. The next prime is 977299. The reversal of 977287 is 782779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782779 = 73 ⋅10723.

It is a cyclic number.

It is not a de Polignac number, because 977287 - 2¹⁵ = 944519 is a prime.

It is a Duffinian number.

977287 is a lucky 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 (977257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (244834).

2⁹⁷⁷²⁸⁷ is an apocalyptic number.

977287 is a deficient number, since it is larger than the sum of its proper divisors (2049).

977287 is a wasteful number, since it uses less digits than its factorization.

977287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048.

The product of its digits is 49392, while the sum is 40.

The square root of 977287 is about 988.5782720655. The cubic root of 977287 is about 99.2370945538.

The spelling of 977287 in words is "nine hundred seventy-seven thousand, two hundred eighty-seven".