150665640 has 128 divisors (see below), whose sum is σ = 478310400. Its totient is φ = 37889280.

The previous prime is 150665633. The next prime is 150665651. The reversal of 150665640 is 46566051.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217695 + ... + 218385.

It is an arithmetic number, because the mean of its divisors is an integer number (3736800).

Almost surely, 2^150665640 is an apocalyptic number.

150665640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 150665640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239155200).

150665640 is an abundant number, since it is smaller than the sum of its proper divisors (327644760).

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

150665640 is a wasteful number, since it uses less digits than its factorization.

150665640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 150665640 is about 12274.5932722840. The cubic root of 150665640 is about 532.1140671609.

It can be divided in two parts, 15066 and 5640, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 150665640 in words is "one hundred fifty million, six hundred sixty-five thousand, six hundred forty".