72479679 has 4 divisors (see below), whose sum is σ = 96639576. Its totient is φ = 48319784.

The previous prime is 72479657. The next prime is 72479689. The reversal of 72479679 is 97697427.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72479679 - 2¹² = 72475583 is a prime.

It is a super-3 number, since 3×72479679³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72479609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12079944 + ... + 12079949.

It is an arithmetic number, because the mean of its divisors is an integer number (24159894).

Almost surely, 2^72479679 is an apocalyptic number.

72479679 is a deficient number, since it is larger than the sum of its proper divisors (24159897).

72479679 is a wasteful number, since it uses less digits than its factorization.

72479679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24159896.

The product of its digits is 1333584, while the sum is 51.

The square root of 72479679 is about 8513.4998091267. The cubic root of 72479679 is about 416.9385839655.

The spelling of 72479679 in words is "seventy-two million, four hundred seventy-nine thousand, six hundred seventy-nine".