690441111 has 32 divisors (see below), whose sum is σ = 1084838400. Its totient is φ = 432501120.

The previous prime is 690441109. The next prime is 690441121. The reversal of 690441111 is 111144096.

It is not a de Polignac number, because 690441111 - 2¹ = 690441109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690441121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 472500 + ... + 473958.

It is an arithmetic number, because the mean of its divisors is an integer number (33901200).

Almost surely, 2^690441111 is an apocalyptic number.

690441111 is a deficient number, since it is larger than the sum of its proper divisors (394397289).

690441111 is a wasteful number, since it uses less digits than its factorization.

690441111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 690441111 is about 26276.2461360066. The cubic root of 690441111 is about 883.8438565729.

The spelling of 690441111 in words is "six hundred ninety million, four hundred forty-one thousand, one hundred eleven".