67072501 has 4 divisors (see below), whose sum is σ = 67921600. Its totient is φ = 66223404.

The previous prime is 67072477. The next prime is 67072513. The reversal of 67072501 is 10527076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67072501 - 2⁷ = 67072373 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67072501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67072541) 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, 424431 + ... + 424588.

It is an arithmetic number, because the mean of its divisors is an integer number (16980400).

Almost surely, 2^67072501 is an apocalyptic number.

It is an amenable number.

67072501 is a deficient number, since it is larger than the sum of its proper divisors (849099).

67072501 is an equidigital number, since it uses as much as digits as its factorization.

67072501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849098.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 67072501 is about 8189.7802778829. The cubic root of 67072501 is about 406.3012578795.

Adding to 67072501 its reverse (10527076), we get a palindrome (77599577).

The spelling of 67072501 in words is "sixty-seven million, seventy-two thousand, five hundred one".