70670556 has 120 divisors (see below), whose sum is σ = 204906240. Its totient is φ = 21060000.

The previous prime is 70670533. The next prime is 70670591. The reversal of 70670556 is 65507607.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 70670556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 281431 + ... + 281681.

It is an arithmetic number, because the mean of its divisors is an integer number (1707552).

Almost surely, 2^70670556 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 70670556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102453120).

70670556 is an abundant number, since it is smaller than the sum of its proper divisors (134235684).

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

70670556 is a wasteful number, since it uses less digits than its factorization.

70670556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The square root of 70670556 is about 8406.5781385770. The cubic root of 70670556 is about 413.4403275448.

The spelling of 70670556 in words is "seventy million, six hundred seventy thousand, five hundred fifty-six".