70531560 has 160 divisors (see below), whose sum is σ = 258746400. Its totient is φ = 17089920.

The previous prime is 70531543. The next prime is 70531577. The reversal of 70531560 is 6513507.

70531560 is a `hidden beast` number, since 70 + 5 + 31 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (70531543) and next prime (70531577).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34651 + ... + 36629.

It is an arithmetic number, because the mean of its divisors is an integer number (1617165).

Almost surely, 2^70531560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70531560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129373200).

70531560 is an abundant number, since it is smaller than the sum of its proper divisors (188214840).

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

70531560 is a wasteful number, since it uses less digits than its factorization.

70531560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 70531560 is about 8398.3069722415. The cubic root of 70531560 is about 413.1690959238.

The spelling of 70531560 in words is "seventy million, five hundred thirty-one thousand, five hundred sixty".