61907947 has 8 divisors (see below), whose sum is σ = 65244560. Its totient is φ = 58579200.

The previous prime is 61907939. The next prime is 61907981. The reversal of 61907947 is 74970916.

It is a happy number.

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 61907947 - 2³ = 61907939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61907987) 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, 21463 + ... + 24175.

It is an arithmetic number, because the mean of its divisors is an integer number (8155570).

Almost surely, 2^61907947 is an apocalyptic number.

61907947 is a deficient number, since it is larger than the sum of its proper divisors (3336613).

61907947 is a wasteful number, since it uses less digits than its factorization.

61907947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 61907947 is about 7868.1603313608. The cubic root of 61907947 is about 395.5931844852.

The spelling of 61907947 in words is "sixty-one million, nine hundred seven thousand, nine hundred forty-seven".