698799770 has 16 divisors (see below), whose sum is σ = 1258531560. Its totient is φ = 279366144.

The previous prime is 698799769. The next prime is 698799791. The reversal of 698799770 is 77997896.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 689430049 + 9369721 = 26257^2 + 3061^2 .

It is a super-2 number, since 2×698799770² = 976642237104105800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866 + ... + 37394.

Almost surely, 2^698799770 is an apocalyptic number.

698799770 is a deficient number, since it is larger than the sum of its proper divisors (559731790).

698799770 is a wasteful number, since it uses less digits than its factorization.

698799770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38449.

The product of its (nonzero) digits is 12002256, while the sum is 62.

The square root of 698799770 is about 26434.8211645171. The cubic root of 698799770 is about 887.3962404651.

The spelling of 698799770 in words is "six hundred ninety-eight million, seven hundred ninety-nine thousand, seven hundred seventy".