9697638 has 32 divisors (see below), whose sum is σ = 20557440. Its totient is φ = 3041280.

The previous prime is 9697603. The next prime is 9697691. The reversal of 9697638 is 8367969.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29133 + ... + 29463.

It is an arithmetic number, because the mean of its divisors is an integer number (642420).

Almost surely, 2^9697638 is an apocalyptic number.

9697638 is an abundant number, since it is smaller than the sum of its proper divisors (10859802).

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

9697638 is a wasteful number, since it uses less digits than its factorization.

With its successor (9697639) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (612).

9697638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its digits is 489888, while the sum is 48.

The square root of 9697638 is about 3114.1030811455. The cubic root of 9697638 is about 213.2498115974.

The spelling of 9697638 in words is "nine million, six hundred ninety-seven thousand, six hundred thirty-eight".