70345361 has 4 divisors (see below), whose sum is σ = 70412724. Its totient is φ = 70278000.

The previous prime is 70345357. The next prime is 70345369. The reversal of 70345361 is 16354307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16354307 = 19 ⋅860753.

It can be written as a sum of positive squares in 2 ways, for example, as 25200400 + 45144961 = 5020^2 + 6719^2 .

It is a cyclic number.

It is not a de Polignac number, because 70345361 - 2² = 70345357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70345369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32090 + ... + 34211.

It is an arithmetic number, because the mean of its divisors is an integer number (17603181).

Almost surely, 2^70345361 is an apocalyptic number.

It is an amenable number.

70345361 is a deficient number, since it is larger than the sum of its proper divisors (67363).

70345361 is a wasteful number, since it uses less digits than its factorization.

70345361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67362.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 70345361 is about 8387.2141381987. The cubic root of 70345361 is about 412.8051951384.

Adding to 70345361 its reverse (16354307), we get a palindrome (86699668).

It can be divided in two parts, 703 and 45361, that added together give a palindrome (46064).

The spelling of 70345361 in words is "seventy million, three hundred forty-five thousand, three hundred sixty-one".