97860649 has 4 divisors (see below), whose sum is σ = 99239040. Its totient is φ = 96482260.

The previous prime is 97860643. The next prime is 97860673. The reversal of 97860649 is 94606879.

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 97860649 - 2⁹ = 97860137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97860643) 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, 689089 + ... + 689230.

It is an arithmetic number, because the mean of its divisors is an integer number (24809760).

Almost surely, 2^97860649 is an apocalyptic number.

It is an amenable number.

97860649 is a deficient number, since it is larger than the sum of its proper divisors (1378391).

97860649 is a wasteful number, since it uses less digits than its factorization.

97860649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378390.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 97860649 is about 9892.4541444477. The cubic root of 97860649 is about 460.8249987066.

The spelling of 97860649 in words is "ninety-seven million, eight hundred sixty thousand, six hundred forty-nine".