261020704 has 48 divisors (see below), whose sum is σ = 599816448. Its totient is φ = 109481472.

The previous prime is 261020693. The next prime is 261020729. The reversal of 261020704 is 407020162.

261020704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869 + ... + 22924.

It is an arithmetic number, because the mean of its divisors is an integer number (12496176).

Almost surely, 2^261020704 is an apocalyptic number.

It is an amenable number.

261020704 is an abundant number, since it is smaller than the sum of its proper divisors (338795744).

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

261020704 is a wasteful number, since it uses less digits than its factorization.

261020704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24857 (or 24849 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 261020704 is about 16156.1351814102. The cubic root of 261020704 is about 639.0845505498.

Adding to 261020704 its reverse (407020162), we get a palindrome (668040866).

The spelling of 261020704 in words is "two hundred sixty-one million, twenty thousand, seven hundred four".