629222690 has 8 divisors (see below), whose sum is σ = 1132600860. Its totient is φ = 251689072.

The previous prime is 629222687. The next prime is 629222723. The reversal of 629222690 is 96222926.

It can be written as a sum of positive squares in 2 ways, for example, as 609941809 + 19280881 = 24697^2 + 4391^2 .

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

It is a super-2 number, since 2×629222690² = 791842387221672200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31461125 + ... + 31461144.

Almost surely, 2^629222690 is an apocalyptic number.

629222690 is a deficient number, since it is larger than the sum of its proper divisors (503378170).

629222690 is a wasteful number, since it uses less digits than its factorization.

629222690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62922276.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 629222690 is about 25084.3116309776. The cubic root of 629222690 is about 856.9091726319.

It can be divided in two parts, 6292 and 22690, that added together give a palindrome (28982).

The spelling of 629222690 in words is "six hundred twenty-nine million, two hundred twenty-two thousand, six hundred ninety".