87145970 has 16 divisors (see below), whose sum is σ = 165119040. Its totient is φ = 33023664.

The previous prime is 87145969. The next prime is 87145973. The reversal of 87145970 is 7954178.

It is not an unprimeable number, because it can be changed into a prime (87145973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229142 + ... + 229521.

It is an arithmetic number, because the mean of its divisors is an integer number (10319940).

Almost surely, 2^87145970 is an apocalyptic number.

87145970 is a deficient number, since it is larger than the sum of its proper divisors (77973070).

87145970 is a wasteful number, since it uses less digits than its factorization.

87145970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458689.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 87145970 is about 9335.2005870254. The cubic root of 87145970 is about 443.3524398019.

The spelling of 87145970 in words is "eighty-seven million, one hundred forty-five thousand, nine hundred seventy".