723646490 has 32 divisors (see below), whose sum is σ = 1495234944. Its totient is φ = 247008960.

The previous prime is 723646459. The next prime is 723646499. The reversal of 723646490 is 94646327.

It is not an unprimeable number, because it can be changed into a prime (723646499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6881 + ... + 38660.

It is an arithmetic number, because the mean of its divisors is an integer number (46726092).

Almost surely, 2^723646490 is an apocalyptic number.

723646490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

723646490 is an abundant number, since it is smaller than the sum of its proper divisors (771588454).

723646490 is a wasteful number, since it uses less digits than its factorization.

723646490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45782.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 723646490 is about 26900.6782442376. The cubic root of 723646490 is about 897.7914944571.

The spelling of 723646490 in words is "seven hundred twenty-three million, six hundred forty-six thousand, four hundred ninety".