609876540 has 432 divisors, whose sum is σ = 2415565152. Its totient is φ = 128024064.

The previous prime is 609876521. The next prime is 609876541. The reversal of 609876540 is 45678906.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609876541) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3095722 + ... + 3095918.

It is an arithmetic number, because the mean of its divisors is an integer number (5591586).

Almost surely, 2^609876540 is an apocalyptic number.

609876540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609876540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207782576).

609876540 is an abundant number, since it is smaller than the sum of its proper divisors (1805688612).

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

609876540 is a wasteful number, since it uses less digits than its factorization.

609876540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 609876540 is about 24695.6785693368. The cubic root of 609876540 is about 848.0353888607.

The spelling of 609876540 in words is "six hundred nine million, eight hundred seventy-six thousand, five hundred forty".