6461690 has 8 divisors (see below), whose sum is σ = 11631060. Its totient is φ = 2584672.

The previous prime is 6461657. The next prime is 6461713. The reversal of 6461690 is 961646.

It can be written as a sum of positive squares in 2 ways, for example, as 5564881 + 896809 = 2359^2 + 947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6461690² = 83506875312200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323075 + ... + 323094.

Almost surely, 2^6461690 is an apocalyptic number.

6461690 is a deficient number, since it is larger than the sum of its proper divisors (5169370).

6461690 is a wasteful number, since it uses less digits than its factorization.

6461690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646176.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6461690 is about 2541.9854444902. The cubic root of 6461690 is about 186.2581877097.

The spelling of 6461690 in words is "six million, four hundred sixty-one thousand, six hundred ninety".