97963631 has 4 divisors (see below), whose sum is σ = 98678832. Its totient is φ = 97248432.

The previous prime is 97963583. The next prime is 97963661. The reversal of 97963631 is 13636979.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97963631 is a prime.

It is a super-2 number, since 2×97963631² = 19193745997408322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97963661) 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, 357395 + ... + 357668.

It is an arithmetic number, because the mean of its divisors is an integer number (24669708).

Almost surely, 2^97963631 is an apocalyptic number.

97963631 is a deficient number, since it is larger than the sum of its proper divisors (715201).

97963631 is a wasteful number, since it uses less digits than its factorization.

97963631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715200.

The product of its digits is 183708, while the sum is 44.

The square root of 97963631 is about 9897.6578542603. The cubic root of 97963631 is about 460.9865891704.

The spelling of 97963631 in words is "ninety-seven million, nine hundred sixty-three thousand, six hundred thirty-one".