70583440 has 40 divisors (see below), whose sum is σ = 165221568. Its totient is φ = 28041600.

The previous prime is 70583431. The next prime is 70583441. The reversal of 70583440 is 4438507.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (70583441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9159 + ... + 15001.

Almost surely, 2^70583440 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 70583440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82610784).

70583440 is an abundant number, since it is smaller than the sum of its proper divisors (94638128).

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

70583440 is a wasteful number, since it uses less digits than its factorization.

70583440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007 (or 6001 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 70583440 is about 8401.3951222401. The cubic root of 70583440 is about 413.2703742699.

The spelling of 70583440 in words is "seventy million, five hundred eighty-three thousand, four hundred forty".