70943964 has 72 divisors (see below), whose sum is σ = 207397008. Its totient is φ = 18708480.

The previous prime is 70943963. The next prime is 70943989. The reversal of 70943964 is 46934907.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70943963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3004 + ... + 12284.

It is an arithmetic number, because the mean of its divisors is an integer number (2880514).

Almost surely, 2^70943964 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 70943964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103698504).

70943964 is an abundant number, since it is smaller than the sum of its proper divisors (136453044).

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

70943964 is a wasteful number, since it uses less digits than its factorization.

70943964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9315 (or 9306 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 70943964 is about 8422.8239919875. The cubic root of 70943964 is about 413.9728097151.

The spelling of 70943964 in words is "seventy million, nine hundred forty-three thousand, nine hundred sixty-four".