72694093 has 4 divisors (see below), whose sum is σ = 72756828. Its totient is φ = 72631360.

The previous prime is 72694087. The next prime is 72694117. The reversal of 72694093 is 39049627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39049627 = 1627 ⋅24001.

It can be written as a sum of positive squares in 2 ways, for example, as 70509609 + 2184484 = 8397^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 72694093 - 2²¹ = 70596941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72694393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29596 + ... + 31957.

It is an arithmetic number, because the mean of its divisors is an integer number (18189207).

Almost surely, 2^72694093 is an apocalyptic number.

It is an amenable number.

72694093 is a deficient number, since it is larger than the sum of its proper divisors (62735).

72694093 is a wasteful number, since it uses less digits than its factorization.

72694093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62734.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 72694093 is about 8526.0830983518. The cubic root of 72694093 is about 417.3493172985.

The spelling of 72694093 in words is "seventy-two million, six hundred ninety-four thousand, ninety-three".