75051666 has 24 divisors (see below), whose sum is σ = 163897344. Its totient is φ = 24819480.

The previous prime is 75051661. The next prime is 75051667. The reversal of 75051666 is 66615057.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 75051666.

It is not an unprimeable number, because it can be changed into a prime (75051661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14130 + ... + 18701.

It is an arithmetic number, because the mean of its divisors is an integer number (6829056).

Almost surely, 2^75051666 is an apocalyptic number.

75051666 is an abundant number, since it is smaller than the sum of its proper divisors (88845678).

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

75051666 is a wasteful number, since it uses less digits than its factorization.

75051666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32966 (or 32963 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 75051666 is about 8663.2364622005. The cubic root of 75051666 is about 421.8131477387.

The spelling of 75051666 in words is "seventy-five million, fifty-one thousand, six hundred sixty-six".