61669893 has 8 divisors (see below), whose sum is σ = 83041056. Its totient is φ = 40706000.

The previous prime is 61669891. The next prime is 61669903. The reversal of 61669893 is 39896616.

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 61669893 - 2¹ = 61669891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61669891) 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, 101463 + ... + 102068.

It is an arithmetic number, because the mean of its divisors is an integer number (10380132).

Almost surely, 2^61669893 is an apocalyptic number.

It is an amenable number.

61669893 is a deficient number, since it is larger than the sum of its proper divisors (21371163).

61669893 is a wasteful number, since it uses less digits than its factorization.

61669893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203635.

The product of its digits is 419904, while the sum is 48.

The square root of 61669893 is about 7853.0180822407. The cubic root of 61669893 is about 395.0854763479.

The spelling of 61669893 in words is "sixty-one million, six hundred sixty-nine thousand, eight hundred ninety-three".