629657423 has 4 divisors (see below), whose sum is σ = 630276360. Its totient is φ = 629038488.

The previous prime is 629657387. The next prime is 629657429. The reversal of 629657423 is 324756926.

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

It is a cyclic number.

It is not a de Polignac number, because 629657423 - 2¹⁴ = 629641039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629657429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307940 + ... + 309977.

It is an arithmetic number, because the mean of its divisors is an integer number (157569090).

Almost surely, 2^629657423 is an apocalyptic number.

629657423 is a deficient number, since it is larger than the sum of its proper divisors (618937).

629657423 is a wasteful number, since it uses less digits than its factorization.

629657423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618936.

The product of its digits is 544320, while the sum is 44.

The square root of 629657423 is about 25092.9755708644. The cubic root of 629657423 is about 857.1064747639.

The spelling of 629657423 in words is "six hundred twenty-nine million, six hundred fifty-seven thousand, four hundred twenty-three".