72746511 has 4 divisors (see below), whose sum is σ = 96995352. Its totient is φ = 48497672.

The previous prime is 72746503. The next prime is 72746533. The reversal of 72746511 is 11564727.

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 72746511 - 2³ = 72746503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72746591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12124416 + ... + 12124421.

It is an arithmetic number, because the mean of its divisors is an integer number (24248838).

Almost surely, 2^72746511 is an apocalyptic number.

72746511 is a deficient number, since it is larger than the sum of its proper divisors (24248841).

72746511 is a wasteful number, since it uses less digits than its factorization.

72746511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24248840.

The product of its digits is 11760, while the sum is 33.

The square root of 72746511 is about 8529.1565233615. The cubic root of 72746511 is about 417.4496067877.

The spelling of 72746511 in words is "seventy-two million, seven hundred forty-six thousand, five hundred eleven".