723543406 has 4 divisors (see below), whose sum is σ = 1085315112. Its totient is φ = 361771702.

The previous prime is 723543377. The next prime is 723543419. The reversal of 723543406 is 604345327.

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, 180885850 + ... + 180885853.

It is an arithmetic number, because the mean of its divisors is an integer number (271328778).

Almost surely, 2^723543406 is an apocalyptic number.

723543406 is a deficient number, since it is larger than the sum of its proper divisors (361771706).

723543406 is a wasteful number, since it uses less digits than its factorization.

723543406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361771705.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 723543406 is about 26898.7621648283. The cubic root of 723543406 is about 897.7488620694.

The spelling of 723543406 in words is "seven hundred twenty-three million, five hundred forty-three thousand, four hundred six".