345777507 has 6 divisors (see below), whose sum is σ = 499456412. Its totient is φ = 230518332.

The previous prime is 345777499. The next prime is 345777511. The reversal of 345777507 is 705777543.

345777507 is a `hidden beast` number, since 3 + 4 + 577 + 75 + 0 + 7 = 666.

It is not a de Polignac number, because 345777507 - 2³ = 345777499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345777557) 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 5 ways as a sum of consecutive naturals, for example, 19209853 + ... + 19209870.

Almost surely, 2^345777507 is an apocalyptic number.

345777507 is a deficient number, since it is larger than the sum of its proper divisors (153678905).

345777507 is a wasteful number, since it uses less digits than its factorization.

345777507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38419729 (or 38419726 counting only the distinct ones).

The product of its (nonzero) digits is 720300, while the sum is 45.

The square root of 345777507 is about 18595.0936270835. The cubic root of 345777507 is about 701.8843832776.

The spelling of 345777507 in words is "three hundred forty-five million, seven hundred seventy-seven thousand, five hundred seven".