694149550 has 12 divisors (see below), whose sum is σ = 1291118256. Its totient is φ = 277659800.

The previous prime is 694149527. The next prime is 694149569. The reversal of 694149550 is 55941496.

It is a junction number, because it is equal to n+sod(n) for n = 694149497 and 694149506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6941446 + ... + 6941545.

It is an arithmetic number, because the mean of its divisors is an integer number (107593188).

Almost surely, 2^694149550 is an apocalyptic number.

694149550 is a deficient number, since it is larger than the sum of its proper divisors (596968706).

694149550 is a wasteful number, since it uses less digits than its factorization.

694149550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13883003 (or 13882998 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 694149550 is about 26346.7180119270. The cubic root of 694149550 is about 885.4234410616.

The spelling of 694149550 in words is "six hundred ninety-four million, one hundred forty-nine thousand, five hundred fifty".