72740807 has 8 divisors (see below), whose sum is σ = 77112000. Its totient is φ = 68379904.

The previous prime is 72740783. The next prime is 72740809. The reversal of 72740807 is 70804727.

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

It is a cyclic number.

It is not a de Polignac number, because 72740807 - 2¹⁰ = 72739783 is a prime.

It is a super-2 number, since 2×72740807² = 10582450006022498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72740809) 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 7 ways as a sum of consecutive naturals, for example, 15794 + ... + 19872.

It is an arithmetic number, because the mean of its divisors is an integer number (9639000).

Almost surely, 2^72740807 is an apocalyptic number.

72740807 is a deficient number, since it is larger than the sum of its proper divisors (4371193).

72740807 is a wasteful number, since it uses less digits than its factorization.

72740807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 72740807 is about 8528.8221343864. The cubic root of 72740807 is about 417.4386958645.

The spelling of 72740807 in words is "seventy-two million, seven hundred forty thousand, eight hundred seven".