97690549 has 4 divisors (see below), whose sum is σ = 106571520. Its totient is φ = 88809580.

The previous prime is 97690547. The next prime is 97690573. The reversal of 97690549 is 94509679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97690549 - 2¹ = 97690547 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97690547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4440469 + ... + 4440490.

It is an arithmetic number, because the mean of its divisors is an integer number (26642880).

Almost surely, 2^97690549 is an apocalyptic number.

It is an amenable number.

97690549 is a deficient number, since it is larger than the sum of its proper divisors (8880971).

97690549 is a wasteful number, since it uses less digits than its factorization.

97690549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880970.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 97690549 is about 9883.8529430582. The cubic root of 97690549 is about 460.5578440206.

The spelling of 97690549 in words is "ninety-seven million, six hundred ninety thousand, five hundred forty-nine".