61477823 has 8 divisors (see below), whose sum is σ = 68204160. Its totient is φ = 54941080.

The previous prime is 61477817. The next prime is 61477841. The reversal of 61477823 is 32877416.

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 61477823 - 2⁴ = 61477807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61477723) 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, 46715 + ... + 48012.

It is an arithmetic number, because the mean of its divisors is an integer number (8525520).

Almost surely, 2^61477823 is an apocalyptic number.

61477823 is a deficient number, since it is larger than the sum of its proper divisors (6726337).

61477823 is a wasteful number, since it uses less digits than its factorization.

61477823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94797.

The product of its digits is 56448, while the sum is 38.

The square root of 61477823 is about 7840.7794893110. The cubic root of 61477823 is about 394.6748871052.

The spelling of 61477823 in words is "sixty-one million, four hundred seventy-seven thousand, eight hundred twenty-three".