97321916 has 24 divisors (see below), whose sum is σ = 174410880. Its totient is φ = 47502000.

The previous prime is 97321909. The next prime is 97321963. The reversal of 97321916 is 61912379.

It is a happy number.

It is a super-2 number, since 2×97321916² = 18943110667822112, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 97321916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34271 + ... + 37001.

It is an arithmetic number, because the mean of its divisors is an integer number (7267120).

Almost surely, 2^97321916 is an apocalyptic number.

It is an amenable number.

97321916 is a deficient number, since it is larger than the sum of its proper divisors (77088964).

97321916 is a wasteful number, since it uses less digits than its factorization.

97321916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945 (or 2943 counting only the distinct ones).

The product of its digits is 20412, while the sum is 38.

The square root of 97321916 is about 9865.1870737457. The cubic root of 97321916 is about 459.9778124144.

The spelling of 97321916 in words is "ninety-seven million, three hundred twenty-one thousand, nine hundred sixteen".