75399690 has 64 divisors (see below), whose sum is σ = 185504256. Its totient is φ = 19609152.

The previous prime is 75399689. The next prime is 75399691. The reversal of 75399690 is 9699357.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75399689) and next prime (75399691).

It is a super-2 number, since 2×75399690² = 11370226504192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75399691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266289 + ... + 266571.

It is an arithmetic number, because the mean of its divisors is an integer number (2898504).

Almost surely, 2^75399690 is an apocalyptic number.

75399690 is an abundant number, since it is smaller than the sum of its proper divisors (110104566).

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

75399690 is a wasteful number, since it uses less digits than its factorization.

75399690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483.

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 75399690 is about 8683.2994880978. The cubic root of 75399690 is about 422.4641427034.

The spelling of 75399690 in words is "seventy-five million, three hundred ninety-nine thousand, six hundred ninety".