97672609 has 4 divisors (see below), whose sum is σ = 101040660. Its totient is φ = 94304560.

The previous prime is 97672607. The next prime is 97672621. The reversal of 97672609 is 90627679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90627679 = 6143 ⋅14753.

It can be written as a sum of positive squares in 2 ways, for example, as 46621584 + 51051025 = 6828^2 + 7145^2 .

It is a cyclic number.

It is not a de Polignac number, because 97672609 - 2¹ = 97672607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97672607) 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, 1683982 + ... + 1684039.

It is an arithmetic number, because the mean of its divisors is an integer number (25260165).

Almost surely, 2^97672609 is an apocalyptic number.

It is an amenable number.

97672609 is a deficient number, since it is larger than the sum of its proper divisors (3368051).

97672609 is a wasteful number, since it uses less digits than its factorization.

97672609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368050.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 97672609 is about 9882.9453605694. The cubic root of 97672609 is about 460.5296498448.

The spelling of 97672609 in words is "ninety-seven million, six hundred seventy-two thousand, six hundred nine".