72635071 has 4 divisors (see below), whose sum is σ = 73165392. Its totient is φ = 72104752.

The previous prime is 72635051. The next prime is 72635083. The reversal of 72635071 is 17053627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17053627 = 31 ⋅550117.

It is a cyclic number.

It is not a de Polignac number, because 72635071 - 2⁵ = 72635039 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72635021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264955 + ... + 265228.

It is an arithmetic number, because the mean of its divisors is an integer number (18291348).

Almost surely, 2^72635071 is an apocalyptic number.

72635071 is a deficient number, since it is larger than the sum of its proper divisors (530321).

72635071 is a wasteful number, since it uses less digits than its factorization.

72635071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530320.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 72635071 is about 8522.6211343694. The cubic root of 72635071 is about 417.2363348903.

Adding to 72635071 its reverse (17053627), we get a palindrome (89688698).

The spelling of 72635071 in words is "seventy-two million, six hundred thirty-five thousand, seventy-one".