665642462 has 16 divisors (see below), whose sum is σ = 1026923184. Its totient is φ = 323400000.

The previous prime is 665642459. The next prime is 665642489. The reversal of 665642462 is 264246566.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4412 + ... + 36752.

It is an arithmetic number, because the mean of its divisors is an integer number (64182699).

Almost surely, 2^665642462 is an apocalyptic number.

665642462 is a deficient number, since it is larger than the sum of its proper divisors (361280722).

665642462 is a wasteful number, since it uses less digits than its factorization.

665642462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32635.

The product of its digits is 414720, while the sum is 41.

The square root of 665642462 is about 25800.0477131342. The cubic root of 665642462 is about 873.1328728508.

The spelling of 665642462 in words is "six hundred sixty-five million, six hundred forty-two thousand, four hundred sixty-two".