699481 has 4 divisors (see below), whose sum is σ = 715792. Its totient is φ = 683172.

The previous prime is 699469. The next prime is 699493. The reversal of 699481 is 184996.

699481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (699469) and next prime (699493).

It is a cyclic number.

It is not a de Polignac number, because 699481 - 2⁵ = 699449 is a prime.

It is a super-2 number, since 2×699481² = 978547338722, which contains 22 as substring.

It is a Duffinian number.

699481 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 699481.

It is not an unprimeable number, because it can be changed into a prime (699401) 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, 8091 + ... + 8176.

It is an arithmetic number, because the mean of its divisors is an integer number (178948).

2⁶⁹⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

699481 is a deficient number, since it is larger than the sum of its proper divisors (16311).

699481 is a wasteful number, since it uses less digits than its factorization.

699481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16310.

The product of its digits is 15552, while the sum is 37.

The square root of 699481 is about 836.3498071979. The cubic root of 699481 is about 88.7684508356.

Subtracting from 699481 its product of digits (15552), we obtain a square (683929 = 827²).

The spelling of 699481 in words is "six hundred ninety-nine thousand, four hundred eighty-one".