6461777467 has 4 divisors (see below), whose sum is σ = 6462517360. Its totient is φ = 6461037576.

The previous prime is 6461777461. The next prime is 6461777473. The reversal of 6461777467 is 7647771646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7647771646 = 2 ⋅3823885823.

It is an interprime number because it is at equal distance from previous prime (6461777461) and next prime (6461777473).

It is a cyclic number.

It is not a de Polignac number, because 6461777467 - 2³ = 6461777459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6461777461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356688 + ... + 374365.

It is an arithmetic number, because the mean of its divisors is an integer number (1615629340).

Almost surely, 2^6461777467 is an apocalyptic number.

6461777467 is a deficient number, since it is larger than the sum of its proper divisors (739893).

6461777467 is an equidigital number, since it uses as much as digits as its factorization.

6461777467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739892.

The product of its digits is 8297856, while the sum is 55.

The square root of 6461777467 is about 80385.1818869622. The cubic root of 6461777467 is about 1862.5902811784.

The spelling of 6461777467 in words is "six billion, four hundred sixty-one million, seven hundred seventy-seven thousand, four hundred sixty-seven".