867541720 has 16 divisors (see below), whose sum is σ = 1951968960. Its totient is φ = 347016672.

The previous prime is 867541711. The next prime is 867541721. The reversal of 867541720 is 27145768.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 21688543 = 867541720 / (8 + 6 + 7 + 5 + 4 + 1 + 7 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867541721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10844232 + ... + 10844311.

It is an arithmetic number, because the mean of its divisors is an integer number (121998060).

Almost surely, 2^867541720 is an apocalyptic number.

It is an amenable number.

867541720 is an abundant number, since it is smaller than the sum of its proper divisors (1084427240).

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

867541720 is a wasteful number, since it uses less digits than its factorization.

867541720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21688554 (or 21688550 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 867541720 is about 29454.0611800818. The cubic root of 867541720 is about 953.7402759490.

The spelling of 867541720 in words is "eight hundred sixty-seven million, five hundred forty-one thousand, seven hundred twenty".