61406009 has 8 divisors (see below), whose sum is σ = 72442368. Its totient is φ = 50935680.

The previous prime is 61405999. The next prime is 61406039. The reversal of 61406009 is 90060416.

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

It is a cyclic number.

It is not a de Polignac number, because 61406009 - 2¹² = 61401913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61406039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141272 + ... + 141705.

It is an arithmetic number, because the mean of its divisors is an integer number (9055296).

Almost surely, 2^61406009 is an apocalyptic number.

It is an amenable number.

61406009 is a deficient number, since it is larger than the sum of its proper divisors (11036359).

61406009 is a wasteful number, since it uses less digits than its factorization.

61406009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283015.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 61406009 is about 7836.1986319899. The cubic root of 61406009 is about 394.5211502275.

The spelling of 61406009 in words is "sixty-one million, four hundred six thousand, nine".