72681051 has 8 divisors (see below), whose sum is σ = 99161920. Its totient is φ = 47327112.

The previous prime is 72681043. The next prime is 72681053. The reversal of 72681051 is 15018627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72681051 - 2³ = 72681043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72681053) 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, 281581 + ... + 281838.

It is an arithmetic number, because the mean of its divisors is an integer number (12395240).

Almost surely, 2^72681051 is an apocalyptic number.

72681051 is a deficient number, since it is larger than the sum of its proper divisors (26480869).

72681051 is a wasteful number, since it uses less digits than its factorization.

72681051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563465.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 72681051 is about 8525.3182345294. The cubic root of 72681051 is about 417.3243570157.

Adding to 72681051 its reverse (15018627), we get a palindrome (87699678).

The spelling of 72681051 in words is "seventy-two million, six hundred eighty-one thousand, fifty-one".