698254861 has 16 divisors (see below), whose sum is σ = 760629888. Its totient is φ = 639144000.

The previous prime is 698254841. The next prime is 698254871. The reversal of 698254861 is 168452896.

It is a cyclic number.

It is not a de Polignac number, because 698254861 - 2¹¹ = 698252813 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 (698254801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45186 + ... + 58636.

It is an arithmetic number, because the mean of its divisors is an integer number (47539368).

Almost surely, 2^698254861 is an apocalyptic number.

698254861 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

698254861 is a deficient number, since it is larger than the sum of its proper divisors (62375027).

698254861 is a wasteful number, since it uses less digits than its factorization.

698254861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13572.

The product of its digits is 829440, while the sum is 49.

The square root of 698254861 is about 26424.5125025988. The cubic root of 698254861 is about 887.1655229975.

The spelling of 698254861 in words is "six hundred ninety-eight million, two hundred fifty-four thousand, eight hundred sixty-one".