70870530 has 16 divisors (see below), whose sum is σ = 170089344. Its totient is φ = 18898800.

The previous prime is 70870507. The next prime is 70870537. The reversal of 70870530 is 3507807.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2362351 = 70870530 / (7 + 0 + 8 + 7 + 0 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (70870537) 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, 1181146 + ... + 1181205.

It is an arithmetic number, because the mean of its divisors is an integer number (10630584).

Almost surely, 2^70870530 is an apocalyptic number.

70870530 is an abundant number, since it is smaller than the sum of its proper divisors (99218814).

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

70870530 is a wasteful number, since it uses less digits than its factorization.

70870530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362361.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 70870530 is about 8418.4636365551. The cubic root of 70870530 is about 413.8299261747.

The spelling of 70870530 in words is "seventy million, eight hundred seventy thousand, five hundred thirty".