70345511 has 16 divisors (see below), whose sum is σ = 74027520. Its totient is φ = 66792000.

The previous prime is 70345489. The next prime is 70345519. The reversal of 70345511 is 11554307.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70345511 is a prime.

It is a super-2 number, since 2×70345511² = 9896981835702242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70345519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280136 + ... + 280386.

It is an arithmetic number, because the mean of its divisors is an integer number (4626720).

Almost surely, 2^70345511 is an apocalyptic number.

70345511 is a deficient number, since it is larger than the sum of its proper divisors (3682009).

70345511 is a wasteful number, since it uses less digits than its factorization.

70345511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 70345511 is about 8387.2230803765. The cubic root of 70345511 is about 412.8054885514.

Adding to 70345511 its reverse (11554307), we get a palindrome (81899818).

The spelling of 70345511 in words is "seventy million, three hundred forty-five thousand, five hundred eleven".