97664442 has 8 divisors (see below), whose sum is σ = 195328896. Its totient is φ = 32554812.

The previous prime is 97664429. The next prime is 97664467. The reversal of 97664442 is 24446679.

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

97664442 is an admirable number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 97664394 and 97664403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8138698 + ... + 8138709.

It is an arithmetic number, because the mean of its divisors is an integer number (24416112).

Almost surely, 2^97664442 is an apocalyptic number.

97664442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97664442 is a wasteful number, since it uses less digits than its factorization.

97664442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16277412.

The product of its digits is 290304, while the sum is 42.

The square root of 97664442 is about 9882.5321653916. The cubic root of 97664442 is about 460.5168135934.

The spelling of 97664442 in words is "ninety-seven million, six hundred sixty-four thousand, four hundred forty-two".