726401650 has 48 divisors (see below), whose sum is σ = 1462906368. Its totient is φ = 266760000.

The previous prime is 726401573. The next prime is 726401651. The reversal of 726401650 is 56104627.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (726401651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121225 + ... + 127075.

It is an arithmetic number, because the mean of its divisors is an integer number (30477216).

Almost surely, 2^726401650 is an apocalyptic number.

726401650 is an abundant number, since it is smaller than the sum of its proper divisors (736504718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

726401650 is a wasteful number, since it uses less digits than its factorization.

726401650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 726401650 is about 26951.8394548498. The cubic root of 726401650 is about 898.9294472437.

The spelling of 726401650 in words is "seven hundred twenty-six million, four hundred one thousand, six hundred fifty".