67400051 has 8 divisors (see below), whose sum is σ = 72232224. Its totient is φ = 62726400.

The previous prime is 67400033. The next prime is 67400063. The reversal of 67400051 is 15000476.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67400051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67400071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38750 + ... + 40451.

It is an arithmetic number, because the mean of its divisors is an integer number (9029028).

Almost surely, 2^67400051 is an apocalyptic number.

67400051 is a deficient number, since it is larger than the sum of its proper divisors (4832173).

67400051 is a wasteful number, since it uses less digits than its factorization.

67400051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79261.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 67400051 is about 8209.7534067717. The cubic root of 67400051 is about 406.9615777891.

The spelling of 67400051 in words is "sixty-seven million, four hundred thousand, fifty-one".