971633412 has 36 divisors (see below), whose sum is σ = 2478616140. Its totient is φ = 320905152.

The previous prime is 971633407. The next prime is 971633473. The reversal of 971633412 is 214336179.

971633412 is a `hidden beast` number, since 9 + 7 + 1 + 633 + 4 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 481188096 + 490445316 = 21936^2 + 22146^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119883 + ... + 127730.

Almost surely, 2^971633412 is an apocalyptic number.

It is an amenable number.

971633412 is an abundant number, since it is smaller than the sum of its proper divisors (1506982728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971633412 is a wasteful number, since it uses less digits than its factorization.

971633412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247732 (or 247727 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 971633412 is about 31171.0348240157. The cubic root of 971633412 is about 990.4536274348.

The spelling of 971633412 in words is "nine hundred seventy-one million, six hundred thirty-three thousand, four hundred twelve".