70705536 has 128 divisors (see below), whose sum is σ = 215913600. Its totient is φ = 20275200.

The previous prime is 70705529. The next prime is 70705549. The reversal of 70705536 is 63550707.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 70705497 and 70705506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79816 + ... + 80696.

It is an arithmetic number, because the mean of its divisors is an integer number (1686825).

Almost surely, 2^70705536 is an apocalyptic number.

70705536 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 70705536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107956800).

70705536 is an abundant number, since it is smaller than the sum of its proper divisors (145208064).

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

70705536 is a wasteful number, since it uses less digits than its factorization.

70705536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 33.

The square root of 70705536 is about 8408.6583947738. The cubic root of 70705536 is about 413.5085301929.

The spelling of 70705536 in words is "seventy million, seven hundred five thousand, five hundred thirty-six".