97690539 has 8 divisors (see below), whose sum is σ = 133283392. Its totient is φ = 63612360.

The previous prime is 97690519. The next prime is 97690547. The reversal of 97690539 is 93509679.

It is a happy number.

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

It is not a de Polignac number, because 97690539 - 2⁸ = 97690283 is a prime.

It is a super-2 number, since 2×97690539² = 19086882820221042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97690519) 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, 378517 + ... + 378774.

It is an arithmetic number, because the mean of its divisors is an integer number (16660424).

Almost surely, 2^97690539 is an apocalyptic number.

97690539 is a deficient number, since it is larger than the sum of its proper divisors (35592853).

97690539 is a wasteful number, since it uses less digits than its factorization.

97690539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757337.

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 97690539 is about 9883.8524371826. The cubic root of 97690539 is about 460.5578283057.

The spelling of 97690539 in words is "ninety-seven million, six hundred ninety thousand, five hundred thirty-nine".