629620993 has 16 divisors (see below), whose sum is σ = 702760320. Its totient is φ = 560583936.

The previous prime is 629620991. The next prime is 629621009. The reversal of 629620993 is 399026926.

It is a cyclic number.

It is not a de Polignac number, because 629620993 - 2¹ = 629620991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (629620991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390996 + ... + 392602.

It is an arithmetic number, because the mean of its divisors is an integer number (43922520).

Almost surely, 2^629620993 is an apocalyptic number.

It is an amenable number.

629620993 is a deficient number, since it is larger than the sum of its proper divisors (73139327).

629620993 is a wasteful number, since it uses less digits than its factorization.

629620993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 629620993 is about 25092.2496600046. The cubic root of 629620993 is about 857.0899446160.

The spelling of 629620993 in words is "six hundred twenty-nine million, six hundred twenty thousand, nine hundred ninety-three".