87841970 has 8 divisors (see below), whose sum is σ = 158115564. Its totient is φ = 35136784.

The previous prime is 87841969. The next prime is 87842011. The reversal of 87841970 is 7914878.

It can be written as a sum of positive squares in 2 ways, for example, as 82864609 + 4977361 = 9103^2 + 2231^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4392089 + ... + 4392108.

Almost surely, 2^87841970 is an apocalyptic number.

87841970 is a deficient number, since it is larger than the sum of its proper divisors (70273594).

87841970 is a wasteful number, since it uses less digits than its factorization.

87841970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8784204.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 87841970 is about 9372.4047074377. The cubic root of 87841970 is about 444.5296043528.

The spelling of 87841970 in words is "eighty-seven million, eight hundred forty-one thousand, nine hundred seventy".