662934780 has 240 divisors, whose sum is σ = 2188105920. Its totient is φ = 167795712.

The previous prime is 662934761. The next prime is 662934791. The reversal of 662934780 is 87439266.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4838872 + ... + 4839008.

It is an arithmetic number, because the mean of its divisors is an integer number (9117108).

Almost surely, 2^662934780 is an apocalyptic number.

662934780 is a gapful number since it is divisible by the number (60) 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 662934780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094052960).

662934780 is an abundant number, since it is smaller than the sum of its proper divisors (1525171140).

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

662934780 is a wasteful number, since it uses less digits than its factorization.

662934780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 662934780 is about 25747.5198805633. The cubic root of 662934780 is about 871.9473620135.

The spelling of 662934780 in words is "six hundred sixty-two million, nine hundred thirty-four thousand, seven hundred eighty".