67006351 has 4 divisors (see below), whose sum is σ = 67261392. Its totient is φ = 66751312.

The previous prime is 67006307. The next prime is 67006399. The reversal of 67006351 is 15360076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67006351 - 2¹⁵ = 66973583 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 (67006301) 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, 127126 + ... + 127651.

It is an arithmetic number, because the mean of its divisors is an integer number (16815348).

Almost surely, 2^67006351 is an apocalyptic number.

67006351 is a deficient number, since it is larger than the sum of its proper divisors (255041).

67006351 is a wasteful number, since it uses less digits than its factorization.

67006351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255040.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 67006351 is about 8185.7407117499. The cubic root of 67006351 is about 406.1676429187.

The spelling of 67006351 in words is "sixty-seven million, six thousand, three hundred fifty-one".