75071070 has 32 divisors (see below), whose sum is σ = 200190240. Its totient is φ = 20018880.

The previous prime is 75071063. The next prime is 75071089. The reversal of 75071070 is 7017057.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138751 + ... + 139290.

It is an arithmetic number, because the mean of its divisors is an integer number (6255945).

Almost surely, 2^75071070 is an apocalyptic number.

75071070 is an abundant number, since it is smaller than the sum of its proper divisors (125119170).

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

75071070 is a wasteful number, since it uses less digits than its factorization.

75071070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278057 (or 278051 counting only the distinct ones).

The product of its (nonzero) digits is 1715, while the sum is 27.

The square root of 75071070 is about 8664.3562946130. The cubic root of 75071070 is about 421.8494967299.

The spelling of 75071070 in words is "seventy-five million, seventy-one thousand, seventy".