70641740 has 48 divisors (see below), whose sum is σ = 166719168. Its totient is φ = 24946944.

The previous prime is 70641713. The next prime is 70641743. The reversal of 70641740 is 4714607.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70641743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74 + ... + 11886.

It is an arithmetic number, because the mean of its divisors is an integer number (3473316).

Almost surely, 2^70641740 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 70641740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83359584).

70641740 is an abundant number, since it is smaller than the sum of its proper divisors (96077428).

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

70641740 is a wasteful number, since it uses less digits than its factorization.

70641740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11858 (or 11856 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 70641740 is about 8404.8640679073. The cubic root of 70641740 is about 413.3841263167.

The spelling of 70641740 in words is "seventy million, six hundred forty-one thousand, seven hundred forty".