10997780 has 24 divisors (see below), whose sum is σ = 23224320. Its totient is φ = 4374560.

The previous prime is 10997771. The next prime is 10997797. The reversal of 10997780 is 8779901.

It is a congruent number.

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, 2381 + ... + 5259.

It is an arithmetic number, because the mean of its divisors is an integer number (967680).

Almost surely, 2^10997780 is an apocalyptic number.

10997780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10997780 is an abundant number, since it is smaller than the sum of its proper divisors (12226540).

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

10997780 is a wasteful number, since it uses less digits than its factorization.

10997780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079 (or 3077 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 10997780 is about 3316.2900958752. The cubic root of 10997780 is about 222.3830467297.

The spelling of 10997780 in words is "ten million, nine hundred ninety-seven thousand, seven hundred eighty".