264693745 has 16 divisors (see below), whose sum is σ = 334183248. Its totient is φ = 201000960.

The previous prime is 264693739. The next prime is 264693761. The reversal of 264693745 is 547396462.

264693745 = 1756² + 1757² + ... + 1837².

It can be written as a sum of positive squares in 8 ways, for example, as 44675856 + 220017889 = 6684^2 + 14833^2 .

It is a de Polignac number, because none of the positive numbers 2^k-264693745 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264693695 and 264693704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9864 + ... + 25033.

It is an arithmetic number, because the mean of its divisors is an integer number (20886453).

Almost surely, 2^264693745 is an apocalyptic number.

It is an amenable number.

264693745 is a deficient number, since it is larger than the sum of its proper divisors (69489503).

264693745 is a wasteful number, since it uses less digits than its factorization.

264693745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34980.

The product of its digits is 1088640, while the sum is 46.

The square root of 264693745 is about 16269.4113292399. The cubic root of 264693745 is about 642.0682964516.

The spelling of 264693745 in words is "two hundred sixty-four million, six hundred ninety-three thousand, seven hundred forty-five".