276461664 has 36 divisors (see below), whose sum is σ = 726139764. Its totient is φ = 92099584.

The previous prime is 276461659. The next prime is 276461719. The reversal of 276461664 is 466164672.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162064 + ... + 163760.

It is an arithmetic number, because the mean of its divisors is an integer number (20170549).

Almost surely, 2^276461664 is an apocalyptic number.

276461664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

276461664 is an abundant number, since it is smaller than the sum of its proper divisors (449678100).

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

276461664 is an frugal number, since it uses more digits than its factorization.

276461664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407 (or 1702 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 276461664 is about 16627.1363740122. The cubic root of 276461664 is about 651.4458261709.

The spelling of 276461664 in words is "two hundred seventy-six million, four hundred sixty-one thousand, six hundred sixty-four".