97509965 has 16 divisors (see below), whose sum is σ = 134787072. Its totient is φ = 66334464.

The previous prime is 97509959. The next prime is 97509989. The reversal of 97509965 is 56990579.

It is not a de Polignac number, because 97509965 - 2¹⁰ = 97508941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6524 + ... + 15413.

It is an arithmetic number, because the mean of its divisors is an integer number (8424192).

Almost surely, 2^97509965 is an apocalyptic number.

It is an amenable number.

97509965 is a deficient number, since it is larger than the sum of its proper divisors (37277107).

97509965 is a wasteful number, since it uses less digits than its factorization.

97509965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22076.

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 97509965 is about 9874.7134135629. The cubic root of 97509965 is about 460.2738838412.

The spelling of 97509965 in words is "ninety-seven million, five hundred nine thousand, nine hundred sixty-five".