1667022464 has 64 divisors (see below), whose sum is σ = 3384188640. Its totient is φ = 817806336.

The previous prime is 1667022449. The next prime is 1667022479. The reversal of 1667022464 is 4642207661.

It is an interprime number because it is at equal distance from previous prime (1667022449) and next prime (1667022479).

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837499 + ... + 1838405.

Almost surely, 2^1667022464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667022464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692094320).

1667022464 is an abundant number, since it is smaller than the sum of its proper divisors (1717166176).

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

1667022464 is an equidigital number, since it uses as much as digits as its factorization.

1667022464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 1667022464 is about 40829.1864234398. The cubic root of 1667022464 is about 1185.7154643706.

The spelling of 1667022464 in words is "one billion, six hundred sixty-seven million, twenty-two thousand, four hundred sixty-four".