698144381 has 8 divisors (see below), whose sum is σ = 761930400. Its totient is φ = 634411440.

The previous prime is 698144371. The next prime is 698144399. The reversal of 698144381 is 183441896.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-698144381 is a prime.

It is a super-2 number, since 2×698144381² = 974811153443746322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698144371) 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, 17315 + ... + 41183.

It is an arithmetic number, because the mean of its divisors is an integer number (95241300).

Almost surely, 2^698144381 is an apocalyptic number.

It is an amenable number.

698144381 is a deficient number, since it is larger than the sum of its proper divisors (63786019).

698144381 is a wasteful number, since it uses less digits than its factorization.

698144381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26539.

The product of its digits is 165888, while the sum is 44.

The square root of 698144381 is about 26422.4219366810. The cubic root of 698144381 is about 887.1187305238.

The spelling of 698144381 in words is "six hundred ninety-eight million, one hundred forty-four thousand, three hundred eighty-one".