97658409 has 8 divisors (see below), whose sum is σ = 130428160. Its totient is φ = 64997136.

The previous prime is 97658389. The next prime is 97658417. The reversal of 97658409 is 90485679.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97658409 - 2¹² = 97654313 is a prime.

It is a super-2 number, since 2×97658409² = 19074329696822562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97658419) 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, 24994 + ... + 28635.

It is an arithmetic number, because the mean of its divisors is an integer number (16303520).

Almost surely, 2^97658409 is an apocalyptic number.

It is an amenable number.

97658409 is a deficient number, since it is larger than the sum of its proper divisors (32769751).

97658409 is a wasteful number, since it uses less digits than its factorization.

97658409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54239.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 97658409 is about 9882.2269251419. The cubic root of 97658409 is about 460.5073309366.

The spelling of 97658409 in words is "ninety-seven million, six hundred fifty-eight thousand, four hundred nine".