72840606 has 16 divisors (see below), whose sum is σ = 145832448. Its totient is φ = 24255000.

The previous prime is 72840601. The next prime is 72840611. The reversal of 72840606 is 60604827.

It is an interprime number because it is at equal distance from previous prime (72840601) and next prime (72840611).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72840601) 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, 531 + ... + 12081.

It is an arithmetic number, because the mean of its divisors is an integer number (9114528).

Almost surely, 2^72840606 is an apocalyptic number.

72840606 is an abundant number, since it is smaller than the sum of its proper divisors (72991842).

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

72840606 is a wasteful number, since it uses less digits than its factorization.

72840606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12607.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 72840606 is about 8534.6708196626. The cubic root of 72840606 is about 417.6295146012.

The spelling of 72840606 in words is "seventy-two million, eight hundred forty thousand, six hundred six".