240651864 has 64 divisors (see below), whose sum is σ = 707810400. Its totient is φ = 75497472.

The previous prime is 240651863. The next prime is 240651869. The reversal of 240651864 is 468156042.

240651864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240651863) 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, 29097 + ... + 36440.

Almost surely, 2^240651864 is an apocalyptic number.

240651864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

240651864 is an abundant number, since it is smaller than the sum of its proper divisors (467158536).

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

240651864 is a wasteful number, since it uses less digits than its factorization.

240651864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65569 (or 65559 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 240651864 is about 15512.9579384462. The cubic root of 240651864 is about 622.0086295126.

The spelling of 240651864 in words is "two hundred forty million, six hundred fifty-one thousand, eight hundred sixty-four".