87006890 has 32 divisors (see below), whose sum is σ = 165870720. Its totient is φ = 32768064.

The previous prime is 87006889. The next prime is 87006893. The reversal of 87006890 is 9860078.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87006893) 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, 31547 + ... + 34193.

It is an arithmetic number, because the mean of its divisors is an integer number (5183460).

Almost surely, 2^87006890 is an apocalyptic number.

87006890 is a deficient number, since it is larger than the sum of its proper divisors (78863830).

87006890 is a wasteful number, since it uses less digits than its factorization.

87006890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 87006890 is about 9327.7483885448. The cubic root of 87006890 is about 443.1164591472.

The spelling of 87006890 in words is "eighty-seven million, six thousand, eight hundred ninety".