8151690 has 16 divisors (see below), whose sum is σ = 19564128. Its totient is φ = 2173776.

The previous prime is 8151673. The next prime is 8151701. The reversal of 8151690 is 961518.

It is a happy number.

It is a super-2 number, since 2×8151690² = 132900099712200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 271723 = 8151690 / (8 + 1 + 5 + 1 + 6 + 9 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135832 + ... + 135891.

It is an arithmetic number, because the mean of its divisors is an integer number (1222758).

Almost surely, 2^8151690 is an apocalyptic number.

8151690 is an abundant number, since it is smaller than the sum of its proper divisors (11412438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8151690 is a wasteful number, since it uses less digits than its factorization.

8151690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271733.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 8151690 is about 2855.1164599715. The cubic root of 8151690 is about 201.2561769126.

The spelling of 8151690 in words is "eight million, one hundred fifty-one thousand, six hundred ninety".