97646690 has 16 divisors (see below), whose sum is σ = 177321528. Its totient is φ = 38712576.

The previous prime is 97646687. The next prime is 97646729. The reversal of 97646690 is 9664679.

It can be written as a sum of positive squares in 4 ways, for example, as 58721569 + 38925121 = 7663^2 + 6239^2 .

It is a super-2 number, since 2×97646690² = 19069752135912200, which contains 22 as substring.

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, 42077 + ... + 44336.

Almost surely, 2^97646690 is an apocalyptic number.

97646690 is a deficient number, since it is larger than the sum of its proper divisors (79674838).

97646690 is a wasteful number, since it uses less digits than its factorization.

97646690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86533.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 97646690 is about 9881.6339741968. The cubic root of 97646690 is about 460.4889099208.

The spelling of 97646690 in words is "ninety-seven million, six hundred forty-six thousand, six hundred ninety".