690946574 has 4 divisors (see below), whose sum is σ = 1036419864. Its totient is φ = 345473286.

The previous prime is 690946567. The next prime is 690946579. The reversal of 690946574 is 475649096.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690946579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172736642 + ... + 172736645.

It is an arithmetic number, because the mean of its divisors is an integer number (259104966).

Almost surely, 2^690946574 is an apocalyptic number.

690946574 is a deficient number, since it is larger than the sum of its proper divisors (345473290).

690946574 is a wasteful number, since it uses less digits than its factorization.

690946574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345473289.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 690946574 is about 26285.8626261342. The cubic root of 690946574 is about 884.0594875101.

The spelling of 690946574 in words is "six hundred ninety million, nine hundred forty-six thousand, five hundred seventy-four".