629648674 has 4 divisors (see below), whose sum is σ = 944473014. Its totient is φ = 314824336.

The previous prime is 629648671. The next prime is 629648683. The reversal of 629648674 is 476846926.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476846926 = 2 ⋅238423463.

It can be written as a sum of positive squares in only one way, i.e., 587723049 + 41925625 = 24243^2 + 6475^2 .

It is not an unprimeable number, because it can be changed into a prime (629648671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157412167 + ... + 157412170.

Almost surely, 2^629648674 is an apocalyptic number.

629648674 is a deficient number, since it is larger than the sum of its proper divisors (314824340).

629648674 is a wasteful number, since it uses less digits than its factorization.

629648674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314824339.

The product of its digits is 3483648, while the sum is 52.

The square root of 629648674 is about 25092.8012386023. The cubic root of 629648674 is about 857.1025049548.

The spelling of 629648674 in words is "six hundred twenty-nine million, six hundred forty-eight thousand, six hundred seventy-four".