61423967 has 8 divisors (see below), whose sum is σ = 67277952. Its totient is φ = 55615000.

The previous prime is 61423963. The next prime is 61423969. The reversal of 61423967 is 76932416.

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 61423967 - 2² = 61423963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61423967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61423963) 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, 8363 + ... + 13884.

It is an arithmetic number, because the mean of its divisors is an integer number (8409744).

Almost surely, 2^61423967 is an apocalyptic number.

61423967 is a deficient number, since it is larger than the sum of its proper divisors (5853985).

61423967 is a wasteful number, since it uses less digits than its factorization.

61423967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22509.

The product of its digits is 54432, while the sum is 38.

The square root of 61423967 is about 7837.3443844200. The cubic root of 61423967 is about 394.5596053146.

The spelling of 61423967 in words is "sixty-one million, four hundred twenty-three thousand, nine hundred sixty-seven".