866087465 has 16 divisors (see below), whose sum is σ = 1090298880. Its totient is φ = 659547840.

The previous prime is 866087461. The next prime is 866087501. The reversal of 866087465 is 564780668.

It is a happy number.

It is not a de Polignac number, because 866087465 - 2² = 866087461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (866087461) 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 15 ways as a sum of consecutive naturals, for example, 31769 + ... + 52358.

It is an arithmetic number, because the mean of its divisors is an integer number (68143680).

Almost surely, 2^866087465 is an apocalyptic number.

It is an amenable number.

866087465 is a deficient number, since it is larger than the sum of its proper divisors (224211415).

866087465 is a wasteful number, since it uses less digits than its factorization.

866087465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84232.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 866087465 is about 29429.3639924481. The cubic root of 866087465 is about 953.2070615218.

The spelling of 866087465 in words is "eight hundred sixty-six million, eighty-seven thousand, four hundred sixty-five".