143998690 has 16 divisors (see below), whose sum is σ = 282761280. Its totient is φ = 52363120.

The previous prime is 143998681. The next prime is 143998693. The reversal of 143998690 is 96899341.

143998690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×143998690² = 41471245443432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143998693) 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, 654430 + ... + 654649.

It is an arithmetic number, because the mean of its divisors is an integer number (17672580).

Almost surely, 2^143998690 is an apocalyptic number.

143998690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

143998690 is a deficient number, since it is larger than the sum of its proper divisors (138762590).

143998690 is a wasteful number, since it uses less digits than its factorization.

143998690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309097.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 143998690 is about 11999.9454165425. The cubic root of 143998690 is about 524.1466894058.

The spelling of 143998690 in words is "one hundred forty-three million, nine hundred ninety-eight thousand, six hundred ninety".