1662207480 has 128 divisors (see below), whose sum is σ = 5609390400. Its totient is φ = 443232000.

The previous prime is 1662207467. The next prime is 1662207523. The reversal of 1662207480 is 847022661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77980 + ... + 96980.

Almost surely, 2^1662207480 is an apocalyptic number.

1662207480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662207480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2804695200).

1662207480 is an abundant number, since it is smaller than the sum of its proper divisors (3947182920).

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

1662207480 is an equidigital number, since it uses as much as digits as its factorization.

1662207480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19033 (or 19011 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1662207480 is about 40770.1788075549. The cubic root of 1662207480 is about 1184.5727669927.

The spelling of 1662207480 in words is "one billion, six hundred sixty-two million, two hundred seven thousand, four hundred eighty".