629640337 has 4 divisors (see below), whose sum is σ = 631665216. Its totient is φ = 627615460.

The previous prime is 629640331. The next prime is 629640391. The reversal of 629640337 is 733046926.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 629640337 - 2¹⁵ = 629607569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 629640337.

It is not an unprimeable number, because it can be changed into a prime (629640331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011973 + ... + 1012594.

It is an arithmetic number, because the mean of its divisors is an integer number (157916304).

Almost surely, 2^629640337 is an apocalyptic number.

It is an amenable number.

629640337 is a deficient number, since it is larger than the sum of its proper divisors (2024879).

629640337 is a wasteful number, since it uses less digits than its factorization.

629640337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024878.

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 629640337 is about 25092.6351147105. The cubic root of 629640337 is about 857.0987220542.

The spelling of 629640337 in words is "six hundred twenty-nine million, six hundred forty thousand, three hundred thirty-seven".