345640601 has 4 divisors (see below), whose sum is σ = 345681972. Its totient is φ = 345599232.

The previous prime is 345640543. The next prime is 345640621. The reversal of 345640601 is 106046543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 106046543 = 19 ⋅5581397.

It can be written as a sum of positive squares in 2 ways, for example, as 252015625 + 93624976 = 15875^2 + 9676^2 .

It is a cyclic number.

It is not a de Polignac number, because 345640601 - 2²² = 341446297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345640621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3260 + ... + 26493.

It is an arithmetic number, because the mean of its divisors is an integer number (86420493).

Almost surely, 2^345640601 is an apocalyptic number.

It is an amenable number.

345640601 is a deficient number, since it is larger than the sum of its proper divisors (41371).

345640601 is a wasteful number, since it uses less digits than its factorization.

345640601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41370.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 345640601 is about 18591.4120227593. The cubic root of 345640601 is about 701.7917371238.

The spelling of 345640601 in words is "three hundred forty-five million, six hundred forty thousand, six hundred one".