72633545 has 8 divisors (see below), whose sum is σ = 90165960. Its totient is φ = 56103040.

The previous prime is 72633541. The next prime is 72633551. The reversal of 72633545 is 54533627.

It can be written as a sum of positive squares in 4 ways, for example, as 9653449 + 62980096 = 3107^2 + 7936^2 .

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

It is not a de Polignac number, because 72633545 - 2² = 72633541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72633541) 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 7 ways as a sum of consecutive naturals, for example, 250316 + ... + 250605.

It is an arithmetic number, because the mean of its divisors is an integer number (11270745).

Almost surely, 2^72633545 is an apocalyptic number.

It is an amenable number.

72633545 is a deficient number, since it is larger than the sum of its proper divisors (17532415).

72633545 is a wasteful number, since it uses less digits than its factorization.

72633545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500955.

The product of its digits is 75600, while the sum is 35.

The square root of 72633545 is about 8522.5316074509. The cubic root of 72633545 is about 417.2334129450.

The spelling of 72633545 in words is "seventy-two million, six hundred thirty-three thousand, five hundred forty-five".