10780511 has 4 divisors (see below), whose sum is σ = 12320592. Its totient is φ = 9240432.

The previous prime is 10780493. The next prime is 10780513. The reversal of 10780511 is 11508701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10780511 - 2⁶ = 10780447 is a prime.

It is a super-2 number, since 2×10780511² = 232438834842242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10780513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770030 + ... + 770043.

It is an arithmetic number, because the mean of its divisors is an integer number (3080148).

Almost surely, 2^10780511 is an apocalyptic number.

10780511 is a deficient number, since it is larger than the sum of its proper divisors (1540081).

10780511 is an equidigital number, since it uses as much as digits as its factorization.

10780511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540080.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 10780511 is about 3283.3688492157. The cubic root of 10780511 is about 220.9088504357.

The spelling of 10780511 in words is "ten million, seven hundred eighty thousand, five hundred eleven".