7621827994 has 12 divisors (see below), whose sum is σ = 12566568042. Its totient is φ = 3464467160.

The previous prime is 7621827931. The next prime is 7621828001. The reversal of 7621827994 is 4997281267.

It can be written as a sum of positive squares in only one way, i.e., 5669337025 + 1952490969 = 75295^2 + 44187^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15747337 + ... + 15747820.

Almost surely, 2^7621827994 is an apocalyptic number.

7621827994 is a deficient number, since it is larger than the sum of its proper divisors (4944740048).

7621827994 is a wasteful number, since it uses less digits than its factorization.

7621827994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31495181 (or 31495170 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 55.

The square root of 7621827994 is about 87303.0812400112. The cubic root of 7621827994 is about 1967.9756227082.

The spelling of 7621827994 in words is "seven billion, six hundred twenty-one million, eight hundred twenty-seven thousand, nine hundred ninety-four".