72670563 has 24 divisors (see below), whose sum is σ = 127022688. Its totient is φ = 39082752.

The previous prime is 72670561. The next prime is 72670583. The reversal of 72670563 is 36507627.

It is a happy number.

72670563 is a `hidden beast` number, since 7 + 26 + 70 + 563 = 666.

It is not a de Polignac number, because 72670563 - 2¹ = 72670561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72670561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32856 + ... + 34997.

It is an arithmetic number, because the mean of its divisors is an integer number (5292612).

Almost surely, 2^72670563 is an apocalyptic number.

72670563 is a deficient number, since it is larger than the sum of its proper divisors (54352125).

72670563 is a wasteful number, since it uses less digits than its factorization.

72670563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67883 (or 67880 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 72670563 is about 8524.7031033344. The cubic root of 72670563 is about 417.3042825106.

It can be divided in two parts, 726 and 70563, that added together give a square (71289 = 267²).

The spelling of 72670563 in words is "seventy-two million, six hundred seventy thousand, five hundred sixty-three".