67690743 has 4 divisors (see below), whose sum is σ = 90254328. Its totient is φ = 45127160.

The previous prime is 67690717. The next prime is 67690747. The reversal of 67690743 is 34709676.

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 67690743 - 2¹⁰ = 67689719 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 67690695 and 67690704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67690747) 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, 11281788 + ... + 11281793.

It is an arithmetic number, because the mean of its divisors is an integer number (22563582).

Almost surely, 2^67690743 is an apocalyptic number.

67690743 is a deficient number, since it is larger than the sum of its proper divisors (22563585).

67690743 is a wasteful number, since it uses less digits than its factorization.

67690743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22563584.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 67690743 is about 8227.4384227413. The cubic root of 67690743 is about 407.5458048804.

It can be divided in two parts, 676 and 90743, that added together give a palindrome (91419).

The spelling of 67690743 in words is "sixty-seven million, six hundred ninety thousand, seven hundred forty-three".