70664070 has 64 divisors (see below), whose sum is σ = 181149696. Its totient is φ = 17579520.

The previous prime is 70664057. The next prime is 70664071. The reversal of 70664070 is 7046607.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70664071) 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, 64225 + ... + 65315.

It is an arithmetic number, because the mean of its divisors is an integer number (2830464).

Almost surely, 2^70664070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70664070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90574848).

70664070 is an abundant number, since it is smaller than the sum of its proper divisors (110485626).

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

70664070 is a wasteful number, since it uses less digits than its factorization.

70664070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 70664070 is about 8406.1923603972. The cubic root of 70664070 is about 413.4276789202.

The spelling of 70664070 in words is "seventy million, six hundred sixty-four thousand, seventy".