261026624 has 28 divisors (see below), whose sum is σ = 518769600. Its totient is φ = 130313088.

The previous prime is 261026621. The next prime is 261026627. The reversal of 261026624 is 426620162.

261026624 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (261026621) and next prime (261026627).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261026621) 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, 44537 + ... + 50055.

Almost surely, 2^261026624 is an apocalyptic number.

It is an amenable number.

261026624 is a deficient number, since it is larger than the sum of its proper divisors (257742976).

261026624 is an equidigital number, since it uses as much as digits as its factorization.

261026624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270 (or 6260 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 261026624 is about 16156.3183925051. The cubic root of 261026624 is about 639.0893820337.

Adding to 261026624 its reverse (426620162), we get a palindrome (687646786).

The spelling of 261026624 in words is "two hundred sixty-one million, twenty-six thousand, six hundred twenty-four".