642003654 has 32 divisors (see below), whose sum is σ = 1354654080. Its totient is φ = 202277952.

The previous prime is 642003617. The next prime is 642003667. The reversal of 642003654 is 456300246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45937 + ... + 58259.

It is an arithmetic number, because the mean of its divisors is an integer number (42332940).

Almost surely, 2^642003654 is an apocalyptic number.

642003654 is an abundant number, since it is smaller than the sum of its proper divisors (712650426).

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

642003654 is a wasteful number, since it uses less digits than its factorization.

642003654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 642003654 is about 25337.7910244757. The cubic root of 642003654 is about 862.6722603215.

The spelling of 642003654 in words is "six hundred forty-two million, three thousand, six hundred fifty-four".