97890087 has 8 divisors (see below), whose sum is σ = 131106304. Its totient is φ = 64966968.

The previous prime is 97890061. The next prime is 97890101. The reversal of 97890087 is 78009879.

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

It is not a de Polignac number, because 97890087 - 2⁷ = 97889959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97890017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72493 + ... + 73830.

It is an arithmetic number, because the mean of its divisors is an integer number (16388288).

Almost surely, 2^97890087 is an apocalyptic number.

97890087 is a deficient number, since it is larger than the sum of its proper divisors (33216217).

97890087 is a wasteful number, since it uses less digits than its factorization.

97890087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146549.

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 97890087 is about 9893.9419343354. The cubic root of 97890087 is about 460.8712018414.

The spelling of 97890087 in words is "ninety-seven million, eight hundred ninety thousand, eighty-seven".