261295463 has 12 divisors (see below), whose sum is σ = 308665368. Its totient is φ = 219267360.

The previous prime is 261295453. The next prime is 261295469. The reversal of 261295463 is 364592162.

It is not a de Polignac number, because 261295463 - 2¹² = 261291367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261295469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68420 + ... + 72137.

It is an arithmetic number, because the mean of its divisors is an integer number (25722114).

Almost surely, 2^261295463 is an apocalyptic number.

261295463 is a deficient number, since it is larger than the sum of its proper divisors (47369905).

261295463 is a wasteful number, since it uses less digits than its factorization.

261295463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140594 (or 140581 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 261295463 is about 16164.6361852038. The cubic root of 261295463 is about 639.3087124052.

The spelling of 261295463 in words is "two hundred sixty-one million, two hundred ninety-five thousand, four hundred sixty-three".