70649568 has 144 divisors (see below), whose sum is σ = 227026800. Its totient is φ = 20643840.

The previous prime is 70649503. The next prime is 70649591. The reversal of 70649568 is 86594607.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×70649568² = 9982722917173248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91488 + ... + 92256.

It is an arithmetic number, because the mean of its divisors is an integer number (1576575).

Almost surely, 2^70649568 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 70649568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113513400).

70649568 is an abundant number, since it is smaller than the sum of its proper divisors (156377232).

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

70649568 is a wasteful number, since it uses less digits than its factorization.

70649568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 70649568 is about 8405.3297377319. The cubic root of 70649568 is about 413.3993951526.

It can be divided in two parts, 7064956 and 8, that added together give a square (7064964 = 2658²).

The spelling of 70649568 in words is "seventy million, six hundred forty-nine thousand, five hundred sixty-eight".