261376704 has 168 divisors, whose sum is σ = 783683472. Its totient is φ = 83220480.

The previous prime is 261376697. The next prime is 261376723. The reversal of 261376704 is 407673162.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1510762 + ... + 1510934.

Almost surely, 2^261376704 is an apocalyptic number.

261376704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261376704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391841736).

261376704 is an abundant number, since it is smaller than the sum of its proper divisors (522306768).

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

261376704 is a wasteful number, since it uses less digits than its factorization.

261376704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 261376704 is about 16167.1489137696. The cubic root of 261376704 is about 639.3749626910.

The spelling of 261376704 in words is "two hundred sixty-one million, three hundred seventy-six thousand, seven hundred four".