97651995 has 64 divisors (see below), whose sum is σ = 190688256. Its totient is φ = 41656320.

The previous prime is 97651993. The next prime is 97651999. The reversal of 97651995 is 59915679.

It is a happy number.

It is not a de Polignac number, because 97651995 - 2¹ = 97651993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (97651993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 405075 + ... + 405315.

It is an arithmetic number, because the mean of its divisors is an integer number (2979504).

Almost surely, 2^97651995 is an apocalyptic number.

97651995 is a deficient number, since it is larger than the sum of its proper divisors (93036261).

97651995 is a wasteful number, since it uses less digits than its factorization.

With its successor (97651996) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (500).

97651995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its digits is 765450, while the sum is 51.

The square root of 97651995 is about 9881.9023978179. The cubic root of 97651995 is about 460.4972489965.

The spelling of 97651995 in words is "ninety-seven million, six hundred fifty-one thousand, nine hundred ninety-five".