75871998 has 32 divisors (see below), whose sum is σ = 168894720. Its totient is φ = 25247160.

The previous prime is 75871993. The next prime is 75872011. The reversal of 75871998 is 89917857.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75871993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51711 + ... + 53157.

It is an arithmetic number, because the mean of its divisors is an integer number (5277960).

Almost surely, 2^75871998 is an apocalyptic number.

75871998 is an abundant number, since it is smaller than the sum of its proper divisors (93022722).

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

75871998 is a wasteful number, since it uses less digits than its factorization.

75871998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429 (or 2423 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 54.

The square root of 75871998 is about 8710.4533751120. The cubic root of 75871998 is about 423.3444204562.

The spelling of 75871998 in words is "seventy-five million, eight hundred seventy-one thousand, nine hundred ninety-eight".