642954810 has 32 divisors (see below), whose sum is σ = 1550938752. Its totient is φ = 170582720.

The previous prime is 642954803. The next prime is 642954833. The reversal of 642954810 is 18459246.

642954810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×642954810² = 826781775404272200, which contains 22 as substring.

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, 48486 + ... + 60305.

It is an arithmetic number, because the mean of its divisors is an integer number (48466836).

Almost surely, 2^642954810 is an apocalyptic number.

642954810 is an abundant number, since it is smaller than the sum of its proper divisors (907983942).

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

642954810 is a wasteful number, since it uses less digits than its factorization.

642954810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108998.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 642954810 is about 25356.5535907386. The cubic root of 642954810 is about 863.0980787753.

The spelling of 642954810 in words is "six hundred forty-two million, nine hundred fifty-four thousand, eight hundred ten".