70447536 has 80 divisors (see below), whose sum is σ = 203245920. Its totient is φ = 23362560.

The previous prime is 70447529. The next prime is 70447537. The reversal of 70447536 is 63574407.

70447536 is nontrivially palindromic in base 5.

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 70447536.

It is not an unprimeable number, because it can be changed into a prime (70447537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134956 + ... + 135476.

It is an arithmetic number, because the mean of its divisors is an integer number (2540574).

Almost surely, 2^70447536 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 70447536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101622960).

70447536 is an abundant number, since it is smaller than the sum of its proper divisors (132798384).

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

70447536 is a wasteful number, since it uses less digits than its factorization.

70447536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 70447536 is about 8393.3030446899. The cubic root of 70447536 is about 413.0049617642.

The spelling of 70447536 in words is "seventy million, four hundred forty-seven thousand, five hundred thirty-six".