150404661 has 32 divisors (see below), whose sum is σ = 257385600. Its totient is φ = 85789440.

The previous prime is 150404651. The next prime is 150404671. The reversal of 150404661 is 166404051.

150404661 = T₄₁₉₈ + T₄₁₉₉ + ... + T₄₂₁₄.

It is an interprime number because it is at equal distance from previous prime (150404651) and next prime (150404671).

It is not a de Polignac number, because 150404661 - 2¹⁹ = 149880373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150404621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9846 + ... + 19943.

It is an arithmetic number, because the mean of its divisors is an integer number (8043300).

Almost surely, 2^150404661 is an apocalyptic number.

150404661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

150404661 is a deficient number, since it is larger than the sum of its proper divisors (106980939).

150404661 is a wasteful number, since it uses less digits than its factorization.

150404661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29826 (or 29820 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 150404661 is about 12263.9578032542. The cubic root of 150404661 is about 531.8066516656.

It can be divided in two parts, 15040 and 4661, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 150404661 in words is "one hundred fifty million, four hundred four thousand, six hundred sixty-one".