694746090 has 24 divisors (see below), whose sum is σ = 1806340068. Its totient is φ = 185265600.

The previous prime is 694746079. The next prime is 694746097. The reversal of 694746090 is 90647496.

694746090 is a `hidden beast` number, since 69 + 47 + 460 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 641558241 + 53187849 = 25329^2 + 7293^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (694746097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3859611 + ... + 3859790.

Almost surely, 2^694746090 is an apocalyptic number.

694746090 is an abundant number, since it is smaller than the sum of its proper divisors (1111593978).

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

694746090 is a wasteful number, since it uses less digits than its factorization.

694746090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7719414 (or 7719411 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 694746090 is about 26358.0365353719. The cubic root of 694746090 is about 885.6770075857.

The spelling of 694746090 in words is "six hundred ninety-four million, seven hundred forty-six thousand, ninety".