264461987 has 8 divisors (see below), whose sum is σ = 270663120. Its totient is φ = 258332800.

The previous prime is 264461971. The next prime is 264461993. The reversal of 264461987 is 789164462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 264461987 - 2⁴ = 264461971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264461887) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10514 + ... + 25287.

It is an arithmetic number, because the mean of its divisors is an integer number (33832890).

Almost surely, 2^264461987 is an apocalyptic number.

264461987 is a deficient number, since it is larger than the sum of its proper divisors (6201133).

264461987 is an equidigital number, since it uses as much as digits as its factorization.

264461987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35973.

The product of its digits is 580608, while the sum is 47.

The square root of 264461987 is about 16262.2872622519. The cubic root of 264461987 is about 641.8808497416.

The spelling of 264461987 in words is "two hundred sixty-four million, four hundred sixty-one thousand, nine hundred eighty-seven".