6461654537 has 4 divisors (see below), whose sum is σ = 6958704900. Its totient is φ = 5964604176.

The previous prime is 6461654533. The next prime is 6461654557. The reversal of 6461654537 is 7354561646.

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

It can be written as a sum of positive squares in 2 ways, for example, as 970696336 + 5490958201 = 31156^2 + 74101^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461654537 - 2² = 6461654533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6461654491 and 6461654500.

It is not an unprimeable number, because it can be changed into a prime (6461654531) 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, 248525162 + ... + 248525187.

It is an arithmetic number, because the mean of its divisors is an integer number (1739676225).

Almost surely, 2^6461654537 is an apocalyptic number.

It is an amenable number.

6461654537 is a deficient number, since it is larger than the sum of its proper divisors (497050363).

6461654537 is a wasteful number, since it uses less digits than its factorization.

6461654537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497050362.

The product of its digits is 1814400, while the sum is 47.

The square root of 6461654537 is about 80384.4172523506. The cubic root of 6461654537 is about 1862.5784696876.

The spelling of 6461654537 in words is "six billion, four hundred sixty-one million, six hundred fifty-four thousand, five hundred thirty-seven".