261410627 has 2 divisors, whose sum is σ = 261410628. Its totient is φ = 261410626.

The previous prime is 261410623. The next prime is 261410641. The reversal of 261410627 is 726014162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261410627 - 2² = 261410623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 261410627.

It is not a weakly prime, because it can be changed into another prime (261410621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130705313 + 130705314.

It is an arithmetic number, because the mean of its divisors is an integer number (130705314).

Almost surely, 2^261410627 is an apocalyptic number.

261410627 is a deficient number, since it is larger than the sum of its proper divisors (1).

261410627 is an equidigital number, since it uses as much as digits as its factorization.

261410627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 261410627 is about 16168.1980133842. The cubic root of 261410627 is about 639.4026221039.

Adding to 261410627 its reverse (726014162), we get a palindrome (987424789).

The spelling of 261410627 in words is "two hundred sixty-one million, four hundred ten thousand, six hundred twenty-seven".