97321977 has 12 divisors (see below), whose sum is σ = 140664420. Its totient is φ = 64840608.

The previous prime is 97321969. The next prime is 97321981. The reversal of 97321977 is 77912379.

It can be written as a sum of positive squares in 2 ways, for example, as 78216336 + 19105641 = 8844^2 + 4371^2 .

It is not a de Polignac number, because 97321977 - 2³ = 97321969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97321907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20899 + ... + 25127.

It is an arithmetic number, because the mean of its divisors is an integer number (11722035).

Almost surely, 2^97321977 is an apocalyptic number.

It is an amenable number.

97321977 is a deficient number, since it is larger than the sum of its proper divisors (43342443).

97321977 is a wasteful number, since it uses less digits than its factorization.

97321977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792 (or 6789 counting only the distinct ones).

The product of its digits is 166698, while the sum is 45.

The square root of 97321977 is about 9865.1901654251. The cubic root of 97321977 is about 459.9779085169.

The spelling of 97321977 in words is "ninety-seven million, three hundred twenty-one thousand, nine hundred seventy-seven".