73678831 has 4 divisors (see below), whose sum is σ = 73953000. Its totient is φ = 73404664.

The previous prime is 73678819. The next prime is 73678837. The reversal of 73678831 is 13887637.

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 73678831 - 2¹⁵ = 73646063 is a prime.

It is a super-2 number, since 2×73678831² = 10857140275053122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73678837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136681 + ... + 137218.

It is an arithmetic number, because the mean of its divisors is an integer number (18488250).

Almost surely, 2^73678831 is an apocalyptic number.

73678831 is a deficient number, since it is larger than the sum of its proper divisors (274169).

73678831 is a wasteful number, since it uses less digits than its factorization.

73678831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274168.

The product of its digits is 169344, while the sum is 43.

The square root of 73678831 is about 8583.6373991450. The cubic root of 73678831 is about 419.2253881996.

The spelling of 73678831 in words is "seventy-three million, six hundred seventy-eight thousand, eight hundred thirty-one".