70439616 has 168 divisors, whose sum is σ = 227441760. Its totient is φ = 20680704.

The previous prime is 70439587. The next prime is 70439647. The reversal of 70439616 is 61693407.

70439616 is a `hidden beast` number, since 7 + 0 + 4 + 39 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 172020 + ... + 172428.

It is an arithmetic number, because the mean of its divisors is an integer number (1353820).

Almost surely, 2^70439616 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 70439616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113720880).

70439616 is an abundant number, since it is smaller than the sum of its proper divisors (157002144).

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

70439616 is a wasteful number, since it uses less digits than its factorization.

70439616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 70439616 is about 8392.8312267077. The cubic root of 70439616 is about 412.9894839488.

The spelling of 70439616 in words is "seventy million, four hundred thirty-nine thousand, six hundred sixteen".