70023081 has 16 divisors (see below), whose sum is σ = 96926400. Its totient is φ = 44912448.

The previous prime is 70023077. The next prime is 70023089. The reversal of 70023081 is 18032007.

It is not a de Polignac number, because 70023081 - 2² = 70023077 is a prime.

It is a super-2 number, since 2×70023081² = 9806463745465122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70023089) 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, 26310 + ... + 28848.

It is an arithmetic number, because the mean of its divisors is an integer number (6057900).

Almost surely, 2^70023081 is an apocalyptic number.

It is an amenable number.

70023081 is a deficient number, since it is larger than the sum of its proper divisors (26903319).

70023081 is a wasteful number, since it uses less digits than its factorization.

70023081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 70023081 is about 8367.9795052330. The cubic root of 70023081 is about 412.1738218537.

Adding to 70023081 its reverse (18032007), we get a palindrome (88055088).

The spelling of 70023081 in words is "seventy million, twenty-three thousand, eighty-one".