87078297 has 4 divisors (see below), whose sum is σ = 116104400. Its totient is φ = 58052196.

The previous prime is 87078281. The next prime is 87078307. The reversal of 87078297 is 79287078.

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 not a de Polignac number, because 87078297 - 2⁴ = 87078281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87078997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14513047 + ... + 14513052.

It is an arithmetic number, because the mean of its divisors is an integer number (29026100).

Almost surely, 2^87078297 is an apocalyptic number.

It is an amenable number.

87078297 is a deficient number, since it is larger than the sum of its proper divisors (29026103).

87078297 is a wasteful number, since it uses less digits than its factorization.

87078297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29026102.

The product of its (nonzero) digits is 395136, while the sum is 48.

The square root of 87078297 is about 9331.5752689458. The cubic root of 87078297 is about 443.2376486484.

The spelling of 87078297 in words is "eighty-seven million, seventy-eight thousand, two hundred ninety-seven".