151690 has 32 divisors (see below), whose sum is σ = 342144. Its totient is φ = 47040.

The previous prime is 151687. The next prime is 151693. The reversal of 151690 is 96151.

It is an interprime number because it is at equal distance from previous prime (151687) and next prime (151693).

It is a super-2 number, since 2×151690² = 46019712200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (151693) 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, 672 + ... + 868.

It is an arithmetic number, because the mean of its divisors is an integer number (10692).

2¹⁵¹⁶⁹⁰ is an apocalyptic number.

151690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151690 is an abundant number, since it is smaller than the sum of its proper divisors (190454).

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

151690 is a wasteful number, since it uses less digits than its factorization.

151690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 151690 is about 389.4740042673. The cubic root of 151690 is about 53.3317273822.

It can be divided in two parts, 151 and 690, that added together give a square (841 = 29²).

The spelling of 151690 in words is "one hundred fifty-one thousand, six hundred ninety".