75151668 has 24 divisors (see below), whose sum is σ = 178663968. Its totient is φ = 24577696.

The previous prime is 75151651. The next prime is 75151693. The reversal of 75151668 is 86615157.

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, 58446 + ... + 59717.

It is an arithmetic number, because the mean of its divisors is an integer number (7444332).

Almost surely, 2^75151668 is an apocalyptic number.

It is an amenable number.

75151668 is an abundant number, since it is smaller than the sum of its proper divisors (103512300).

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

75151668 is a wasteful number, since it uses less digits than its factorization.

75151668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118223 (or 118221 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 75151668 is about 8669.0061714132. The cubic root of 75151668 is about 422.0004117903. Note that the first 3 decimals are identical.

The spelling of 75151668 in words is "seventy-five million, one hundred fifty-one thousand, six hundred sixty-eight".