67036421 has 8 divisors (see below), whose sum is σ = 70075584. Its totient is φ = 64007680.

The previous prime is 67036399. The next prime is 67036469. The reversal of 67036421 is 12463076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67036421 - 2⁶ = 67036357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67036471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12470 + ... + 17016.

It is an arithmetic number, because the mean of its divisors is an integer number (8759448).

Almost surely, 2^67036421 is an apocalyptic number.

It is an amenable number.

67036421 is a deficient number, since it is larger than the sum of its proper divisors (3039163).

67036421 is a wasteful number, since it uses less digits than its factorization.

67036421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 67036421 is about 8187.5772362769. The cubic root of 67036421 is about 406.2283915607.

Adding to 67036421 its reverse (12463076), we get a palindrome (79499497).

The spelling of 67036421 in words is "sixty-seven million, thirty-six thousand, four hundred twenty-one".