698542887 has 8 divisors (see below), whose sum is σ = 1064446336. Its totient is φ = 399167352.

The previous prime is 698542883. The next prime is 698542907. The reversal of 698542887 is 788245896.

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

It is not a de Polignac number, because 698542887 - 2² = 698542883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698542883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16631953 + ... + 16631994.

It is an arithmetic number, because the mean of its divisors is an integer number (133055792).

Almost surely, 2^698542887 is an apocalyptic number.

698542887 is a deficient number, since it is larger than the sum of its proper divisors (365903449).

698542887 is a wasteful number, since it uses less digits than its factorization.

698542887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33263957.

The product of its digits is 7741440, while the sum is 57.

The square root of 698542887 is about 26429.9619182473. The cubic root of 698542887 is about 887.2874897391.

The spelling of 698542887 in words is "six hundred ninety-eight million, five hundred forty-two thousand, eight hundred eighty-seven".