87297970 has 16 divisors (see below), whose sum is σ = 165407040. Its totient is φ = 33081264.

The previous prime is 87297967. The next prime is 87297971. The reversal of 87297970 is 7979278.

It is a super-2 number, since 2×87297970² = 15241871132241800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87297971) 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 7 ways as a sum of consecutive naturals, for example, 229542 + ... + 229921.

It is an arithmetic number, because the mean of its divisors is an integer number (10337940).

Almost surely, 2^87297970 is an apocalyptic number.

87297970 is a deficient number, since it is larger than the sum of its proper divisors (78109070).

87297970 is a wasteful number, since it uses less digits than its factorization.

87297970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459489.

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 87297970 is about 9343.3382685205. The cubic root of 87297970 is about 443.6100551894.

The spelling of 87297970 in words is "eighty-seven million, two hundred ninety-seven thousand, nine hundred seventy".