261675470 has 64 divisors (see below), whose sum is σ = 561033216. Its totient is φ = 86002560.

The previous prime is 261675457. The next prime is 261675493. The reversal of 261675470 is 74576162.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183179 + ... + 184601.

It is an arithmetic number, because the mean of its divisors is an integer number (8766144).

Almost surely, 2^261675470 is an apocalyptic number.

261675470 is an abundant number, since it is smaller than the sum of its proper divisors (299357746).

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

261675470 is a wasteful number, since it uses less digits than its factorization.

261675470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 261675470 is about 16176.3861848065. The cubic root of 261675470 is about 639.6184819238.

The spelling of 261675470 in words is "two hundred sixty-one million, six hundred seventy-five thousand, four hundred seventy".