890705977 has 24 divisors (see below), whose sum is σ = 1061786880. Its totient is φ = 744670080.

The previous prime is 890705953. The next prime is 890705983. The reversal of 890705977 is 779507098.

It is not a de Polignac number, because 890705977 - 2¹⁹ = 890181689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890705987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1010577 + ... + 1011457.

It is an arithmetic number, because the mean of its divisors is an integer number (44241120).

Almost surely, 2^890705977 is an apocalyptic number.

It is an amenable number.

890705977 is a deficient number, since it is larger than the sum of its proper divisors (171080903).

890705977 is a wasteful number, since it uses less digits than its factorization.

890705977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 52.

The square root of 890705977 is about 29844.6976362636. The cubic root of 890705977 is about 962.1544412409.

The spelling of 890705977 in words is "eight hundred ninety million, seven hundred five thousand, nine hundred seventy-seven".