70645456 has 60 divisors (see below), whose sum is σ = 160302240. Its totient is φ = 30072000.

The previous prime is 70645451. The next prime is 70645457. The reversal of 70645456 is 65454607.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70645451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196605 + ... + 196963.

It is an arithmetic number, because the mean of its divisors is an integer number (2671704).

Almost surely, 2^70645456 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 70645456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80151120).

70645456 is an abundant number, since it is smaller than the sum of its proper divisors (89656784).

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

70645456 is a wasteful number, since it uses less digits than its factorization.

70645456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 70645456 is about 8405.0851274690. The cubic root of 70645456 is about 413.3913746681.

The spelling of 70645456 in words is "seventy million, six hundred forty-five thousand, four hundred fifty-six".