67722573 has 4 divisors (see below), whose sum is σ = 90296768. Its totient is φ = 45148380.

The previous prime is 67722563. The next prime is 67722581. The reversal of 67722573 is 37522776.

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 not a de Polignac number, because 67722573 - 2⁵ = 67722541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67722533) 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, 11287093 + ... + 11287098.

It is an arithmetic number, because the mean of its divisors is an integer number (22574192).

Almost surely, 2^67722573 is an apocalyptic number.

It is an amenable number.

67722573 is a deficient number, since it is larger than the sum of its proper divisors (22574195).

67722573 is a wasteful number, since it uses less digits than its factorization.

67722573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22574194.

The product of its digits is 123480, while the sum is 39.

The square root of 67722573 is about 8229.3725763268. The cubic root of 67722573 is about 407.6096745206.

The spelling of 67722573 in words is "sixty-seven million, seven hundred twenty-two thousand, five hundred seventy-three".