70380561 has 16 divisors (see below), whose sum is σ = 99546624. Its totient is φ = 44077824.

The previous prime is 70380553. The next prime is 70380587. The reversal of 70380561 is 16508307.

It is not a de Polignac number, because 70380561 - 2³ = 70380553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70380511) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 37696 + ... + 39518.

It is an arithmetic number, because the mean of its divisors is an integer number (6221664).

Almost surely, 2^70380561 is an apocalyptic number.

It is an amenable number.

70380561 is a deficient number, since it is larger than the sum of its proper divisors (29166063).

70380561 is a wasteful number, since it uses less digits than its factorization.

70380561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 70380561 is about 8389.3123079308. The cubic root of 70380561 is about 412.8740379621.

Adding to 70380561 its reverse (16508307), we get a palindrome (86888868).

The spelling of 70380561 in words is "seventy million, three hundred eighty thousand, five hundred sixty-one".