61671465 has 24 divisors (see below), whose sum is σ = 107085888. Its totient is φ = 32833440.

The previous prime is 61671457. The next prime is 61671469. The reversal of 61671465 is 56417616.

It is not a de Polignac number, because 61671465 - 2³ = 61671457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61671469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40060 + ... + 41570.

It is an arithmetic number, because the mean of its divisors is an integer number (4461912).

Almost surely, 2^61671465 is an apocalyptic number.

It is an amenable number.

61671465 is a deficient number, since it is larger than the sum of its proper divisors (45414423).

61671465 is a wasteful number, since it uses less digits than its factorization.

61671465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2426 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 61671465 is about 7853.1181705104. The cubic root of 61671465 is about 395.0888333024.

The spelling of 61671465 in words is "sixty-one million, six hundred seventy-one thousand, four hundred sixty-five".