698312354 has 4 divisors (see below), whose sum is σ = 1047468534. Its totient is φ = 349156176.

The previous prime is 698312353. The next prime is 698312357. The reversal of 698312354 is 453213896.

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

It can be written as a sum of positive squares in only one way, i.e., 456976129 + 241336225 = 21377^2 + 15535^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (698312353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174578087 + ... + 174578090.

Almost surely, 2^698312354 is an apocalyptic number.

698312354 is a deficient number, since it is larger than the sum of its proper divisors (349156180).

698312354 is a wasteful number, since it uses less digits than its factorization.

698312354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349156179.

The product of its digits is 155520, while the sum is 41.

The square root of 698312354 is about 26425.6003526883. The cubic root of 698312354 is about 887.1898715129.

The spelling of 698312354 in words is "six hundred ninety-eight million, three hundred twelve thousand, three hundred fifty-four".