70809552 has 100 divisors (see below), whose sum is σ = 223619616. Its totient is φ = 21453120.

The previous prime is 70809551. The next prime is 70809559. The reversal of 70809552 is 25590807.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70809551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11773 + ... + 16739.

Almost surely, 2^70809552 is an apocalyptic number.

70809552 is a gapful number since it is divisible by the number (72) 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 70809552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111809808).

70809552 is an abundant number, since it is smaller than the sum of its proper divisors (152810064).

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

70809552 is a wasteful number, since it uses less digits than its factorization.

70809552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998 (or 4983 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 70809552 is about 8414.8411749718. The cubic root of 70809552 is about 413.7112037567.

The spelling of 70809552 in words is "seventy million, eight hundred nine thousand, five hundred fifty-two".