975377644 has 6 divisors (see below), whose sum is σ = 1706910884. Its totient is φ = 487688820.

The previous prime is 975377621. The next prime is 975377647. The reversal of 975377644 is 446773579.

It is a junction number, because it is equal to n+sod(n) for n = 975377591 and 975377600.

It is not an unprimeable number, because it can be changed into a prime (975377647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121922202 + ... + 121922209.

Almost surely, 2^975377644 is an apocalyptic number.

It is an amenable number.

975377644 is a deficient number, since it is larger than the sum of its proper divisors (731533240).

975377644 is a wasteful number, since it uses less digits than its factorization.

975377644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243844415 (or 243844413 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 52.

The square root of 975377644 is about 31231.0365502011. The cubic root of 975377644 is about 991.7242488733.

The spelling of 975377644 in words is "nine hundred seventy-five million, three hundred seventy-seven thousand, six hundred forty-four".