1001623662 has 48 divisors (see below), whose sum is σ = 2347280208. Its totient is φ = 306852480.

The previous prime is 1001623661. The next prime is 1001623681. The reversal of 1001623662 is 2663261001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001623661) 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 23 ways as a sum of consecutive naturals, for example, 45337 + ... + 63707.

It is an arithmetic number, because the mean of its divisors is an integer number (48901671).

Almost surely, 2^1001623662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001623662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173640104).

1001623662 is an abundant number, since it is smaller than the sum of its proper divisors (1345656546).

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

1001623662 is a wasteful number, since it uses less digits than its factorization.

1001623662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18625 (or 18622 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1001623662 is about 31648.4385396815. The cubic root of 1001623662 is about 1000.5409280108.

Adding to 1001623662 its reverse (2663261001), we get a palindrome (3664884663).

The spelling of 1001623662 in words is "one billion, one million, six hundred twenty-three thousand, six hundred sixty-two".