72011563 has 8 divisors (see below), whose sum is σ = 77620928. Its totient is φ = 66412224.

The previous prime is 72011549. The next prime is 72011579. The reversal of 72011563 is 36511027.

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 72011563 - 2¹⁷ = 71880491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72011503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19870 + ... + 23212.

It is an arithmetic number, because the mean of its divisors is an integer number (9702616).

Almost surely, 2^72011563 is an apocalyptic number.

72011563 is a deficient number, since it is larger than the sum of its proper divisors (5609365).

72011563 is a wasteful number, since it uses less digits than its factorization.

72011563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5013.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 72011563 is about 8485.9627031940. The cubic root of 72011563 is about 416.0390337972.

The spelling of 72011563 in words is "seventy-two million, eleven thousand, five hundred sixty-three".