346772645 has 4 divisors (see below), whose sum is σ = 416127180. Its totient is φ = 277418112.

The previous prime is 346772593. The next prime is 346772653. The reversal of 346772645 is 546277643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546277643 = 17 ⋅32133979.

It can be written as a sum of positive squares in 2 ways, for example, as 167159041 + 179613604 = 12929^2 + 13402^2 .

It is a cyclic number.

It is not a de Polignac number, because 346772645 - 2²⁰ = 345724069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 346772596 and 346772605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34677260 + ... + 34677269.

It is an arithmetic number, because the mean of its divisors is an integer number (104031795).

Almost surely, 2^346772645 is an apocalyptic number.

It is an amenable number.

346772645 is a deficient number, since it is larger than the sum of its proper divisors (69354535).

346772645 is an equidigital number, since it uses as much as digits as its factorization.

346772645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69354534.

The product of its digits is 846720, while the sum is 44.

The square root of 346772645 is about 18621.8324823311. The cubic root of 346772645 is about 702.5570729077.

The spelling of 346772645 in words is "three hundred forty-six million, seven hundred seventy-two thousand, six hundred forty-five".