264850981 has 4 divisors (see below), whose sum is σ = 265086700. Its totient is φ = 264615264.

The previous prime is 264850979. The next prime is 264851009. The reversal of 264850981 is 189058462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107122500 + 157728481 = 10350^2 + 12559^2 .

It is a cyclic number.

It is not a de Polignac number, because 264850981 - 2¹ = 264850979 is a prime.

It is a super-2 number, since 2×264850981² = 140292084273324722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264850961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116166 + ... + 118423.

It is an arithmetic number, because the mean of its divisors is an integer number (66271675).

Almost surely, 2^264850981 is an apocalyptic number.

It is an amenable number.

264850981 is a deficient number, since it is larger than the sum of its proper divisors (235719).

264850981 is a wasteful number, since it uses less digits than its factorization.

264850981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235718.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 264850981 is about 16274.2428702536. The cubic root of 264850981 is about 642.1954072086.

The spelling of 264850981 in words is "two hundred sixty-four million, eight hundred fifty thousand, nine hundred eighty-one".