70217616 has 160 divisors (see below), whose sum is σ = 231413760. Its totient is φ = 17860608.

The previous prime is 70217549. The next prime is 70217617. The reversal of 70217616 is 61671207.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70217617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108205 + ... + 108851.

It is an arithmetic number, because the mean of its divisors is an integer number (1446336).

Almost surely, 2^70217616 is an apocalyptic number.

70217616 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 70217616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115706880).

70217616 is an abundant number, since it is smaller than the sum of its proper divisors (161196144).

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

70217616 is a wasteful number, since it uses less digits than its factorization.

70217616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 70217616 is about 8379.5952169541. The cubic root of 70217616 is about 412.5551632380. Note that the first 3 decimals are identical.

The spelling of 70217616 in words is "seventy million, two hundred seventeen thousand, six hundred sixteen".