67372945 has 16 divisors (see below), whose sum is σ = 84042000. Its totient is φ = 51787008.

The previous prime is 67372931. The next prime is 67372969. The reversal of 67372945 is 54927376.

It can be written as a sum of positive squares in 8 ways, for example, as 18386944 + 48986001 = 4288^2 + 6999^2 .

It is a cyclic number.

It is not a de Polignac number, because 67372945 - 2⁵ = 67372913 is a prime.

It is a super-2 number, since 2×67372945² = 9078227435946050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32191 + ... + 34219.

It is an arithmetic number, because the mean of its divisors is an integer number (5252625).

Almost surely, 2^67372945 is an apocalyptic number.

It is an amenable number.

67372945 is a deficient number, since it is larger than the sum of its proper divisors (16669055).

67372945 is a wasteful number, since it uses less digits than its factorization.

67372945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

The product of its digits is 317520, while the sum is 43.

The square root of 67372945 is about 8208.1023994587. The cubic root of 67372945 is about 406.9070151220.

The spelling of 67372945 in words is "sixty-seven million, three hundred seventy-two thousand, nine hundred forty-five".