623146646 has 4 divisors (see below), whose sum is σ = 934719972. Its totient is φ = 311573322.

The previous prime is 623146631. The next prime is 623146651. The reversal of 623146646 is 646641326.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155786660 + ... + 155786663.

It is an arithmetic number, because the mean of its divisors is an integer number (233679993).

Almost surely, 2^623146646 is an apocalyptic number.

623146646 is a deficient number, since it is larger than the sum of its proper divisors (311573326).

623146646 is a wasteful number, since it uses less digits than its factorization.

623146646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311573325.

The product of its digits is 124416, while the sum is 38.

The square root of 623146646 is about 24962.9053998127. The cubic root of 623146646 is about 854.1420190622.

The spelling of 623146646 in words is "six hundred twenty-three million, one hundred forty-six thousand, six hundred forty-six".