623401606 has 4 divisors (see below), whose sum is σ = 935102412. Its totient is φ = 311700802.

The previous prime is 623401579. The next prime is 623401607. The reversal of 623401606 is 606104326.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623401607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155850400 + ... + 155850403.

It is an arithmetic number, because the mean of its divisors is an integer number (233775603).

Almost surely, 2^623401606 is an apocalyptic number.

623401606 is a deficient number, since it is larger than the sum of its proper divisors (311700806).

623401606 is a wasteful number, since it uses less digits than its factorization.

623401606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311700805.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 623401606 is about 24968.0116549156. The cubic root of 623401606 is about 854.2584937085.

The spelling of 623401606 in words is "six hundred twenty-three million, four hundred one thousand, six hundred six".