97901649 has 8 divisors (see below), whose sum is σ = 145039520. Its totient is φ = 65267748.

The previous prime is 97901641. The next prime is 97901663. The reversal of 97901649 is 94610979.

It is not a de Polignac number, because 97901649 - 2³ = 97901641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97901641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812967 + ... + 1813020.

It is an arithmetic number, because the mean of its divisors is an integer number (18129940).

Almost surely, 2^97901649 is an apocalyptic number.

It is an amenable number.

97901649 is a deficient number, since it is larger than the sum of its proper divisors (47137871).

97901649 is a wasteful number, since it uses less digits than its factorization.

97901649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625996 (or 3625990 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 97901649 is about 9894.5262140236. The cubic root of 97901649 is about 460.8893459430.

The spelling of 97901649 in words is "ninety-seven million, nine hundred one thousand, six hundred forty-nine".