72671747 has 2 divisors, whose sum is σ = 72671748. Its totient is φ = 72671746.

The previous prime is 72671707. The next prime is 72671749. The reversal of 72671747 is 74717627.

It is a strong prime.

It is an emirp because it is prime and its reverse (74717627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72671747 - 2⁸ = 72671491 is a prime.

Together with 72671749, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72671749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36335873 + 36335874.

It is an arithmetic number, because the mean of its divisors is an integer number (36335874).

Almost surely, 2^72671747 is an apocalyptic number.

72671747 is a deficient number, since it is larger than the sum of its proper divisors (1).

72671747 is an equidigital number, since it uses as much as digits as its factorization.

72671747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115248, while the sum is 41.

The square root of 72671747 is about 8524.7725482854. The cubic root of 72671747 is about 417.3065488367.

The spelling of 72671747 in words is "seventy-two million, six hundred seventy-one thousand, seven hundred forty-seven".