698377678 has 8 divisors (see below), whose sum is σ = 1047812472. Its totient is φ = 349106856.

The previous prime is 698377651. The next prime is 698377679. The reversal of 698377678 is 876773896.

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

It is a super-2 number, since 2×698377678² = 975462762257343368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698377679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29725 + ... + 47752.

It is an arithmetic number, because the mean of its divisors is an integer number (130976559).

Almost surely, 2^698377678 is an apocalyptic number.

698377678 is a deficient number, since it is larger than the sum of its proper divisors (349434794).

698377678 is a wasteful number, since it uses less digits than its factorization.

698377678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81986.

The product of its digits is 21337344, while the sum is 61.

The square root of 698377678 is about 26426.8363221934. The cubic root of 698377678 is about 887.2175348662.

The spelling of 698377678 in words is "six hundred ninety-eight million, three hundred seventy-seven thousand, six hundred seventy-eight".