70809900 has 108 divisors (see below), whose sum is σ = 238375368. Its totient is φ = 16181760.

The previous prime is 70809899. The next prime is 70809929. The reversal of 70809900 is 990807.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12292 + ... + 17108.

Almost surely, 2^70809900 is an apocalyptic number.

70809900 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 70809900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119187684).

70809900 is an abundant number, since it is smaller than the sum of its proper divisors (167565468).

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

70809900 is a wasteful number, since it uses less digits than its factorization.

70809900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848 (or 4834 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 70809900 is about 8414.8618526985. The cubic root of 70809900 is about 413.7118814960.

The spelling of 70809900 in words is "seventy million, eight hundred nine thousand, nine hundred".