70689240 has 256 divisors, whose sum is σ = 254448000. Its totient is φ = 17418240.

The previous prime is 70689239. The next prime is 70689251. The reversal of 70689240 is 4298607.

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

It is a junction number, because it is equal to n+sod(n) for n = 70689195 and 70689204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1158810 + ... + 1158870.

Almost surely, 2^70689240 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 70689240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127224000).

70689240 is an abundant number, since it is smaller than the sum of its proper divisors (183758760).

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

70689240 is a wasteful number, since it uses less digits than its factorization.

70689240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 70689240 is about 8407.6893377432. The cubic root of 70689240 is about 413.4767596832.

The spelling of 70689240 in words is "seventy million, six hundred eighty-nine thousand, two hundred forty".