70557444 has 36 divisors (see below), whose sum is σ = 179999820. Its totient is φ = 23302080.

The previous prime is 70557439. The next prime is 70557479. The reversal of 70557444 is 44475507.

It can be written as a sum of positive squares in 2 ways, for example, as 63202500 + 7354944 = 7950^2 + 2712^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 70557399 and 70557408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5067 + ... + 12914.

It is an arithmetic number, because the mean of its divisors is an integer number (4999995).

Almost surely, 2^70557444 is an apocalyptic number.

It is an amenable number.

70557444 is an abundant number, since it is smaller than the sum of its proper divisors (109442376).

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

70557444 is a wasteful number, since it uses less digits than its factorization.

70557444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18100 (or 18095 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 70557444 is about 8399.8478557650. The cubic root of 70557444 is about 413.2196319813.

The spelling of 70557444 in words is "seventy million, five hundred fifty-seven thousand, four hundred forty-four".