75402985 has 16 divisors (see below), whose sum is σ = 104052096. Its totient is φ = 51383808.

The previous prime is 75402967. The next prime is 75402989. The reversal of 75402985 is 58920457.

It is not a de Polignac number, because 75402985 - 2⁷ = 75402857 is a prime.

It is a super-2 number, since 2×75402985² = 11371220293820450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75402989) 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, 904 + ... + 12313.

It is an arithmetic number, because the mean of its divisors is an integer number (6503256).

Almost surely, 2^75402985 is an apocalyptic number.

It is an amenable number.

75402985 is a deficient number, since it is larger than the sum of its proper divisors (28649111).

75402985 is a wasteful number, since it uses less digits than its factorization.

75402985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13392.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 75402985 is about 8683.4892180505. The cubic root of 75402985 is about 422.4702965708.

The spelling of 75402985 in words is "seventy-five million, four hundred two thousand, nine hundred eighty-five".