261263662 has 8 divisors (see below), whose sum is σ = 427522392. Its totient is φ = 118756200.

The previous prime is 261263627. The next prime is 261263663. The reversal of 261263662 is 266362162.

261263662 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261263663) 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, 5937789 + ... + 5937832.

It is an arithmetic number, because the mean of its divisors is an integer number (53440299).

Almost surely, 2^261263662 is an apocalyptic number.

261263662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261263662 is a deficient number, since it is larger than the sum of its proper divisors (166258730).

261263662 is a wasteful number, since it uses less digits than its factorization.

261263662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11875634.

The product of its digits is 31104, while the sum is 34.

The square root of 261263662 is about 16163.6524956459. The cubic root of 261263662 is about 639.2827756350.

The spelling of 261263662 in words is "two hundred sixty-one million, two hundred sixty-three thousand, six hundred sixty-two".