260566906 has 4 divisors (see below), whose sum is σ = 390850362. Its totient is φ = 130283452.

The previous prime is 260566883. The next prime is 260566907. The reversal of 260566906 is 609665062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609665062 = 2 ⋅304832531.

It can be written as a sum of positive squares in only one way, i.e., 212139225 + 48427681 = 14565^2 + 6959^2 .

It is a super-2 number, since 2×260566906² = 135790225004825672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (260566907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65141725 + ... + 65141728.

Almost surely, 2^260566906 is an apocalyptic number.

260566906 is a deficient number, since it is larger than the sum of its proper divisors (130283456).

260566906 is a wasteful number, since it uses less digits than its factorization.

260566906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130283455.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 260566906 is about 16142.0849334898. The cubic root of 260566906 is about 638.7139751921.

The spelling of 260566906 in words is "two hundred sixty million, five hundred sixty-six thousand, nine hundred six".