87022970 has 32 divisors (see below), whose sum is σ = 160997760. Its totient is φ = 33848640.

The previous prime is 87022967. The next prime is 87022973. The reversal of 87022970 is 7922078.

It is an interprime number because it is at equal distance from previous prime (87022967) and next prime (87022973).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87022970.

It is not an unprimeable number, because it can be changed into a prime (87022973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188540 + ... + 189000.

It is an arithmetic number, because the mean of its divisors is an integer number (5031180).

Almost surely, 2^87022970 is an apocalyptic number.

87022970 is a deficient number, since it is larger than the sum of its proper divisors (73974790).

87022970 is a wasteful number, since it uses less digits than its factorization.

87022970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 87022970 is about 9328.6102930715. The cubic root of 87022970 is about 443.1437553524.

The spelling of 87022970 in words is "eighty-seven million, twenty-two thousand, nine hundred seventy".