261470 has 16 divisors (see below), whose sum is σ = 513648. Its totient is φ = 95040.

The previous prime is 261467. The next prime is 261509. The reversal of 261470 is 74162.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 261470.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1079 + ... + 1298.

It is an arithmetic number, because the mean of its divisors is an integer number (32103).

2²⁶¹⁴⁷⁰ is an apocalyptic number.

261470 is a deficient number, since it is larger than the sum of its proper divisors (252178).

261470 is a wasteful number, since it uses less digits than its factorization.

261470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 261470 is about 511.3413732527. The cubic root of 261470 is about 63.9451026637.

The spelling of 261470 in words is "two hundred sixty-one thousand, four hundred seventy".