70947900 has 180 divisors, whose sum is σ = 242614680. Its totient is φ = 17884800.

The previous prime is 70947889. The next prime is 70947901. The reversal of 70947900 is 974907.

It is a tau number, because it is divible by the number of its divisors (180).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70947901) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 153670 + ... + 154130.

Almost surely, 2^70947900 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 70947900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121307340).

70947900 is an abundant number, since it is smaller than the sum of its proper divisors (171666780).

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

70947900 is a wasteful number, since it uses less digits than its factorization.

70947900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 70947900 is about 8423.0576395986. The cubic root of 70947900 is about 413.9804653669.

Adding to 70947900 its product of nonzero digits (15876), we get a square (70963776 = 8424²).

The spelling of 70947900 in words is "seventy million, nine hundred forty-seven thousand, nine hundred".