70345090 has 16 divisors (see below), whose sum is σ = 127033920. Its totient is φ = 28046320.

The previous prime is 70345081. The next prime is 70345091. The reversal of 70345090 is 9054307.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (70345091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8200 + ... + 14419.

It is an arithmetic number, because the mean of its divisors is an integer number (7939620).

Almost surely, 2^70345090 is an apocalyptic number.

70345090 is a deficient number, since it is larger than the sum of its proper divisors (56688830).

70345090 is a wasteful number, since it uses less digits than its factorization.

70345090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22937.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 70345090 is about 8387.1979826400. The cubic root of 70345090 is about 412.8046650378.

Adding to 70345090 its reverse (9054307), we get a palindrome (79399397).

The spelling of 70345090 in words is "seventy million, three hundred forty-five thousand, ninety".