261602676 has 48 divisors (see below), whose sum is σ = 700116480. Its totient is φ = 84386880.

The previous prime is 261602651. The next prime is 261602699. The reversal of 261602676 is 676206162.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 261602676.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35721 + ... + 42416.

It is an arithmetic number, because the mean of its divisors is an integer number (14585760).

Almost surely, 2^261602676 is an apocalyptic number.

It is an amenable number.

261602676 is an abundant number, since it is smaller than the sum of its proper divisors (438513804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261602676 is a wasteful number, since it uses less digits than its factorization.

261602676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78181 (or 78173 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 261602676 is about 16174.1360202021. The cubic root of 261602676 is about 639.5591658227.

The spelling of 261602676 in words is "two hundred sixty-one million, six hundred two thousand, six hundred seventy-six".