629999998 has 4 divisors (see below), whose sum is σ = 945000000. Its totient is φ = 314999998.

The previous prime is 629999983. The next prime is 630000013. The reversal of 629999998 is 899999926.

629999998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (629999983) and next prime (630000013).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157499998 + ... + 157500001.

It is an arithmetic number, because the mean of its divisors is an integer number (236250000).

Almost surely, 2^629999998 is an apocalyptic number.

629999998 is a deficient number, since it is larger than the sum of its proper divisors (315000002).

629999998 is a wasteful number, since it uses less digits than its factorization.

629999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315000001.

The product of its digits is 51018336, while the sum is 70.

The square root of 629999998 is about 25099.8007561813. The cubic root of 629999998 is about 857.2618873242.

The spelling of 629999998 in words is "six hundred twenty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".