691046474 has 8 divisors (see below), whose sum is σ = 1040423940. Its totient is φ = 344238496.

The previous prime is 691046453. The next prime is 691046557. The reversal of 691046474 is 474640196.

It can be written as a sum of positive squares in 2 ways, for example, as 683456449 + 7590025 = 26143^2 + 2755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641699 + ... + 642774.

Almost surely, 2^691046474 is an apocalyptic number.

691046474 is a deficient number, since it is larger than the sum of its proper divisors (349377466).

691046474 is a wasteful number, since it uses less digits than its factorization.

691046474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284744.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 691046474 is about 26287.7628184675. The cubic root of 691046474 is about 884.1020924861.

The spelling of 691046474 in words is "six hundred ninety-one million, forty-six thousand, four hundred seventy-four".