723653946 has 32 divisors (see below), whose sum is σ = 1609430400. Its totient is φ = 241021440.

The previous prime is 723653941. The next prime is 723653951. The reversal of 723653946 is 649356327.

723653946 is a `hidden beast` number, since 72 + 3 + 6 + 539 + 46 = 666.

723653946 is a nontrivial binomial coefficient, being equal to C(38044, 2).

It is an interprime number because it is at equal distance from previous prime (723653941) and next prime (723653951).

It is a super-2 number, since 2×723653946² = 1047350067122741832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (723653941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71331 + ... + 80841.

It is an arithmetic number, because the mean of its divisors is an integer number (50294700).

Almost surely, 2^723653946 is an apocalyptic number.

723653946 is the 38043-rd triangular number and also the 19022-nd hexagonal number.

723653946 is an abundant number, since it is smaller than the sum of its proper divisors (885776454).

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

723653946 is a wasteful number, since it uses less digits than its factorization.

723653946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10931 (or 10925 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 723653946 is about 26900.8168277471. The cubic root of 723653946 is about 897.7945778735.

The spelling of 723653946 in words is "seven hundred twenty-three million, six hundred fifty-three thousand, nine hundred forty-six".