6765640454 has 4 divisors (see below), whose sum is σ = 10148460684. Its totient is φ = 3382820226.

The previous prime is 6765640447. The next prime is 6765640457. The reversal of 6765640454 is 4540465676.

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

It is a super-2 number, since 2×6765640454² = 91547781505602652232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6765640399 and 6765640408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6765640457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1691410112 + ... + 1691410115.

It is an arithmetic number, because the mean of its divisors is an integer number (2537115171).

Almost surely, 2^6765640454 is an apocalyptic number.

6765640454 is a deficient number, since it is larger than the sum of its proper divisors (3382820230).

6765640454 is a wasteful number, since it uses less digits than its factorization.

6765640454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382820229.

The product of its (nonzero) digits is 2419200, while the sum is 47.

The square root of 6765640454 is about 82253.5133231402. The cubic root of 6765640454 is about 1891.3401331167.

The spelling of 6765640454 in words is "six billion, seven hundred sixty-five million, six hundred forty thousand, four hundred fifty-four".