7640272946 has 4 divisors (see below), whose sum is σ = 11460409422. Its totient is φ = 3820136472.

The previous prime is 7640272903. The next prime is 7640272987. The reversal of 7640272946 is 6492720467.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 6215587921 + 1424685025 = 78839^2 + 37745^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7640272946.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910068235 + ... + 1910068238.

Almost surely, 2^7640272946 is an apocalyptic number.

7640272946 is a deficient number, since it is larger than the sum of its proper divisors (3820136476).

7640272946 is a wasteful number, since it uses less digits than its factorization.

7640272946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820136475.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 7640272946 is about 87408.6548689545. The cubic root of 7640272946 is about 1969.5618551999.

The spelling of 7640272946 in words is "seven billion, six hundred forty million, two hundred seventy-two thousand, nine hundred forty-six".