261480616 has 32 divisors (see below), whose sum is σ = 504199080. Its totient is φ = 127052800.

The previous prime is 261480613. The next prime is 261480623. The reversal of 261480616 is 616084162.

261480616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 104980516 + 156500100 = 10246^2 + 12510^2 .

It is a super-2 number, since 2×261480616² = 136744225087478912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261480613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90750 + ... + 93586.

Almost surely, 2^261480616 is an apocalyptic number.

It is an amenable number.

261480616 is a deficient number, since it is larger than the sum of its proper divisors (242718464).

261480616 is a wasteful number, since it uses less digits than its factorization.

261480616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 261480616 is about 16170.3622717613. The cubic root of 261480616 is about 639.4596806831.

The spelling of 261480616 in words is "two hundred sixty-one million, four hundred eighty thousand, six hundred sixteen".