249617064 has 32 divisors (see below), whose sum is σ = 638557920. Its totient is φ = 81270336.

The previous prime is 249617051. The next prime is 249617083. The reversal of 249617064 is 460716942.

It is a happy number.

249617064 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119907 + ... + 121970.

It is an arithmetic number, because the mean of its divisors is an integer number (19954935).

Almost surely, 2^249617064 is an apocalyptic number.

249617064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

249617064 is an abundant number, since it is smaller than the sum of its proper divisors (388940856).

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

249617064 is a wasteful number, since it uses less digits than its factorization.

249617064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241929 (or 241925 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 249617064 is about 15799.2741605429. The cubic root of 249617064 is about 629.6387144963.

Subtracting 249617064 from its reverse (460716942), we obtain a triangular number (211099878 = T₂₀₅₄₇).

The spelling of 249617064 in words is "two hundred forty-nine million, six hundred seventeen thousand, sixty-four".