75987998 has 16 divisors (see below), whose sum is σ = 119145600. Its totient is φ = 36278616.

The previous prime is 75987997. The next prime is 75988007. The reversal of 75987998 is 89978957.

It is a self number, because there is not a number n which added to its sum of digits gives 75987998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75987997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35153 + ... + 37251.

It is an arithmetic number, because the mean of its divisors is an integer number (7446600).

Almost surely, 2^75987998 is an apocalyptic number.

75987998 is a deficient number, since it is larger than the sum of its proper divisors (43157602).

75987998 is a wasteful number, since it uses less digits than its factorization.

75987998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911.

The product of its digits is 11430720, while the sum is 62.

The square root of 75987998 is about 8717.1094979930. The cubic root of 75987998 is about 423.5600597277.

The spelling of 75987998 in words is "seventy-five million, nine hundred eighty-seven thousand, nine hundred ninety-eight".