629649957 has 8 divisors (see below), whose sum is σ = 839682784. Its totient is φ = 419691888.

The previous prime is 629649941. The next prime is 629649971. The reversal of 629649957 is 759946926.

It is a happy number.

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

It is not a de Polignac number, because 629649957 - 2⁴ = 629649941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 629649897 and 629649906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629649257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5403 + ... + 35895.

It is an arithmetic number, because the mean of its divisors is an integer number (104960348).

Almost surely, 2^629649957 is an apocalyptic number.

It is an amenable number.

629649957 is a deficient number, since it is larger than the sum of its proper divisors (210032827).

629649957 is a wasteful number, since it uses less digits than its factorization.

629649957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37379.

The product of its digits is 7348320, while the sum is 57.

The square root of 629649957 is about 25092.8268036903. The cubic root of 629649957 is about 857.1030871111.

The spelling of 629649957 in words is "six hundred twenty-nine million, six hundred forty-nine thousand, nine hundred fifty-seven".