70976640 has 128 divisors (see below), whose sum is σ = 258606720. Its totient is φ = 16220160.

The previous prime is 70976629. The next prime is 70976707. The reversal of 70976640 is 4667907.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10800 + ... + 16080.

It is an arithmetic number, because the mean of its divisors is an integer number (2020365).

Almost surely, 2^70976640 is an apocalyptic number.

70976640 is a gapful number since it is divisible by the number (70) 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 70976640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129303360).

70976640 is an abundant number, since it is smaller than the sum of its proper divisors (187630080).

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

70976640 is a wasteful number, since it uses less digits than its factorization.

70976640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310 (or 5298 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 70976640 is about 8424.7634981642. The cubic root of 70976640 is about 414.0363570488.

The spelling of 70976640 in words is "seventy million, nine hundred seventy-six thousand, six hundred forty".