7981634 has 32 divisors (see below), whose sum is σ = 13305600. Its totient is φ = 3576960.

The previous prime is 7981627. The next prime is 7981639. The reversal of 7981634 is 4361897.

7981634 = T₂₉₇ + T₂₉₈ + ... + T₄₁₉.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (7981639) 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 15 ways as a sum of consecutive naturals, for example, 73172 + ... + 73280.

It is an arithmetic number, because the mean of its divisors is an integer number (415800).

Almost surely, 2^7981634 is an apocalyptic number.

7981634 is a deficient number, since it is larger than the sum of its proper divisors (5323966).

7981634 is a wasteful number, since it uses less digits than its factorization.

7981634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218.

The product of its digits is 36288, while the sum is 38.

The square root of 7981634 is about 2825.1785784265. The cubic root of 7981634 is about 199.8468327289.

The spelling of 7981634 in words is "seven million, nine hundred eighty-one thousand, six hundred thirty-four".