66150128 has 40 divisors (see below), whose sum is σ = 148048560. Its totient is φ = 28298240.

The previous prime is 66150113. The next prime is 66150143. The reversal of 66150128 is 82105166.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66150113) and next prime (66150143).

It is a self number, because there is not a number n which added to its sum of digits gives 66150128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8063 + ... + 14046.

It is an arithmetic number, because the mean of its divisors is an integer number (3701214).

Almost surely, 2^66150128 is an apocalyptic number.

66150128 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66150128 is an abundant number, since it is smaller than the sum of its proper divisors (81898432).

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

66150128 is a wasteful number, since it uses less digits than its factorization.

66150128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22145 (or 22139 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 66150128 is about 8133.2728959503. The cubic root of 66150128 is about 404.4301858230.

The spelling of 66150128 in words is "sixty-six million, one hundred fifty thousand, one hundred twenty-eight".