70365581 has 8 divisors (see below), whose sum is σ = 82667424. Its totient is φ = 59047920.

The previous prime is 70365577. The next prime is 70365593. The reversal of 70365581 is 18556307.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70365581 - 2² = 70365577 is a prime.

It is a super-2 number, since 2×70365581² = 9902629978935122, 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 (70365521) 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, 245891 + ... + 246176.

It is an arithmetic number, because the mean of its divisors is an integer number (10333428).

Almost surely, 2^70365581 is an apocalyptic number.

It is an amenable number.

70365581 is a deficient number, since it is larger than the sum of its proper divisors (12301843).

70365581 is a wasteful number, since it uses less digits than its factorization.

70365581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492091.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 70365581 is about 8388.4194578001. The cubic root of 70365581 is about 412.8447434531.

The spelling of 70365581 in words is "seventy million, three hundred sixty-five thousand, five hundred eighty-one".