70372656 has 180 divisors, whose sum is σ = 222697800. Its totient is φ = 20680704.

The previous prime is 70372649. The next prime is 70372661. The reversal of 70372656 is 65627307.

It is a happy number.

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 70372656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 790660 + ... + 790748.

It is an arithmetic number, because the mean of its divisors is an integer number (1237210).

Almost surely, 2^70372656 is an apocalyptic number.

70372656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70372656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111348900).

70372656 is an abundant number, since it is smaller than the sum of its proper divisors (152325144).

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

70372656 is a wasteful number, since it uses less digits than its factorization.

70372656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 70372656 is about 8388.8411595405. The cubic root of 70372656 is about 412.8585796622.

The spelling of 70372656 in words is "seventy million, three hundred seventy-two thousand, six hundred fifty-six".