975631 has 4 divisors (see below), whose sum is σ = 1027000. Its totient is φ = 924264.

The previous prime is 975629. The next prime is 975643. The reversal of 975631 is 136579.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136579 = 61 ⋅2239.

It is a cyclic number.

It is not a de Polignac number, because 975631 - 2¹ = 975629 is a prime.

It is a super-2 number, since 2×975631² = 1903711696322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 975593 and 975602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (975661) 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, 25656 + ... + 25693.

It is an arithmetic number, because the mean of its divisors is an integer number (256750).

2⁹⁷⁵⁶³¹ is an apocalyptic number.

975631 is a deficient number, since it is larger than the sum of its proper divisors (51369).

975631 is a wasteful number, since it uses less digits than its factorization.

975631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51368.

The product of its digits is 5670, while the sum is 31.

The square root of 975631 is about 987.7403504970. The cubic root of 975631 is about 99.1810108792.

The spelling of 975631 in words is "nine hundred seventy-five thousand, six hundred thirty-one".