70494660 has 72 divisors (see below), whose sum is σ = 215855640. Its totient is φ = 18620928.

The previous prime is 70494659. The next prime is 70494691. The reversal of 70494660 is 6649407.

It can be written as a sum of positive squares in 4 ways, for example, as 7387524 + 63107136 = 2718^2 + 7944^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17824 + ... + 21416.

It is an arithmetic number, because the mean of its divisors is an integer number (2997995).

Almost surely, 2^70494660 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 70494660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107927820).

70494660 is an abundant number, since it is smaller than the sum of its proper divisors (145360980).

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

70494660 is a wasteful number, since it uses less digits than its factorization.

70494660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717 (or 3712 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 70494660 is about 8396.1098134791. The cubic root of 70494660 is about 413.0970307890.

The spelling of 70494660 in words is "seventy million, four hundred ninety-four thousand, six hundred sixty".