610003640 has 32 divisors (see below), whose sum is σ = 1386106560. Its totient is φ = 241584000.

The previous prime is 610003621. The next prime is 610003649. The reversal of 610003640 is 46300016.

610003640 is digitally balanced in base 6, 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 (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610003649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71456 + ... + 79535.

It is an arithmetic number, because the mean of its divisors is an integer number (43315830).

Almost surely, 2^610003640 is an apocalyptic number.

It is an amenable number.

610003640 is an abundant number, since it is smaller than the sum of its proper divisors (776102920).

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

610003640 is a wasteful number, since it uses less digits than its factorization.

610003640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151103 (or 151099 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 610003640 is about 24698.2517599931. The cubic root of 610003640 is about 848.0942957619.

Adding to 610003640 its reverse (46300016), we get a palindrome (656303656).

The spelling of 610003640 in words is "six hundred ten million, three thousand, six hundred forty".