67645001 has 4 divisors (see below), whose sum is σ = 70586112. Its totient is φ = 64703892.

The previous prime is 67644979. The next prime is 67645021. The reversal of 67645001 is 10054676.

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 67645001 - 2⁶ = 67644937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67645021) 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, 1470521 + ... + 1470566.

It is an arithmetic number, because the mean of its divisors is an integer number (17646528).

Almost surely, 2^67645001 is an apocalyptic number.

It is an amenable number.

67645001 is a deficient number, since it is larger than the sum of its proper divisors (2941111).

67645001 is a wasteful number, since it uses less digits than its factorization.

67645001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941110.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 67645001 is about 8224.6581083958. The cubic root of 67645001 is about 407.4539845415.

Adding to 67645001 its reverse (10054676), we get a palindrome (77699677).

The spelling of 67645001 in words is "sixty-seven million, six hundred forty-five thousand, one".