70209980 has 12 divisors (see below), whose sum is σ = 147441000. Its totient is φ = 28083984.

The previous prime is 70209977. The next prime is 70209991. The reversal of 70209980 is 8990207.

It is a self number, because there is not a number n which added to its sum of digits gives 70209980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755230 + ... + 1755269.

It is an arithmetic number, because the mean of its divisors is an integer number (12286750).

Almost surely, 2^70209980 is an apocalyptic number.

It is an amenable number.

70209980 is an abundant number, since it is smaller than the sum of its proper divisors (77231020).

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

70209980 is a wasteful number, since it uses less digits than its factorization.

70209980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510508 (or 3510506 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 70209980 is about 8379.1395739658. The cubic root of 70209980 is about 412.5402078958.

The spelling of 70209980 in words is "seventy million, two hundred nine thousand, nine hundred eighty".