345725757 has 24 divisors (see below), whose sum is σ = 538511064. Its totient is φ = 212471424.

The previous prime is 345725713. The next prime is 345725761. The reversal of 345725757 is 757527543.

345725757 is a `hidden beast` number, since 3 + 4 + 5 + 72 + 575 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13793796 + 331931961 = 3714^2 + 18219^2 .

It is not a de Polignac number, because 345725757 - 2⁷ = 345725629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345725707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117063 + ... + 119979.

It is an arithmetic number, because the mean of its divisors is an integer number (22437961).

Almost surely, 2^345725757 is an apocalyptic number.

It is an amenable number.

345725757 is a deficient number, since it is larger than the sum of its proper divisors (192785307).

345725757 is a wasteful number, since it uses less digits than its factorization.

345725757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949 (or 3946 counting only the distinct ones).

The product of its digits is 1029000, while the sum is 45.

The square root of 345725757 is about 18593.7020789298. The cubic root of 345725757 is about 701.8493662235.

The spelling of 345725757 in words is "three hundred forty-five million, seven hundred twenty-five thousand, seven hundred fifty-seven".