67406677 has 4 divisors (see below), whose sum is σ = 72591820. Its totient is φ = 62221536.

The previous prime is 67406663. The next prime is 67406681. The reversal of 67406677 is 77660476.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46117681 + 21288996 = 6791^2 + 4614^2 .

It is not a de Polignac number, because 67406677 - 2¹¹ = 67404629 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 (67406627) 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, 2592552 + ... + 2592577.

It is an arithmetic number, because the mean of its divisors is an integer number (18147955).

Almost surely, 2^67406677 is an apocalyptic number.

It is an amenable number.

67406677 is a deficient number, since it is larger than the sum of its proper divisors (5185143).

67406677 is a wasteful number, since it uses less digits than its factorization.

67406677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185142.

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 67406677 is about 8210.1569412527. The cubic root of 67406677 is about 406.9749132837.

The spelling of 67406677 in words is "sixty-seven million, four hundred six thousand, six hundred seventy-seven".