75809898 has 16 divisors (see below), whose sum is σ = 168466560. Its totient is φ = 25269948.

The previous prime is 75809887. The next prime is 75809917. The reversal of 75809898 is 89890857.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1403887 = 75809898 / (7 + 5 + 8 + 0 + 9 + 8 + 9 + 8).

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, 701890 + ... + 701997.

It is an arithmetic number, because the mean of its divisors is an integer number (10529160).

Almost surely, 2^75809898 is an apocalyptic number.

75809898 is an abundant number, since it is smaller than the sum of its proper divisors (92656662).

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

75809898 is a wasteful number, since it uses less digits than its factorization.

75809898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403898 (or 1403892 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 75809898 is about 8706.8879629865. The cubic root of 75809898 is about 423.2288887492.

The spelling of 75809898 in words is "seventy-five million, eight hundred nine thousand, eight hundred ninety-eight".