694045481 has 4 divisors (see below), whose sum is σ = 696034500. Its totient is φ = 692056464.

The previous prime is 694045477. The next prime is 694045489. The reversal of 694045481 is 184540496.

694045481 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.

It can be written as a sum of positive squares in 2 ways, for example, as 391842025 + 302203456 = 19795^2 + 17384^2 .

It is a cyclic number.

It is not a de Polignac number, because 694045481 - 2² = 694045477 is a prime.

It is a super-2 number, since 2×694045481² = 963398259393042722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694045489) 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, 993986 + ... + 994683.

It is an arithmetic number, because the mean of its divisors is an integer number (174008625).

Almost surely, 2^694045481 is an apocalyptic number.

It is an amenable number.

694045481 is a deficient number, since it is larger than the sum of its proper divisors (1989019).

694045481 is a wasteful number, since it uses less digits than its factorization.

694045481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989018.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 694045481 is about 26344.7429480722. The cubic root of 694045481 is about 885.3791903967.

The spelling of 694045481 in words is "six hundred ninety-four million, forty-five thousand, four hundred eighty-one".