61662247 has 8 divisors (see below), whose sum is σ = 65483856. Its totient is φ = 57862272.

The previous prime is 61662233. The next prime is 61662253. The reversal of 61662247 is 74226616.

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 61662247 - 2⁷ = 61662119 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 (61662047) 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, 673 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (8185482).

Almost surely, 2^61662247 is an apocalyptic number.

61662247 is a deficient number, since it is larger than the sum of its proper divisors (3821609).

61662247 is a wasteful number, since it uses less digits than its factorization.

61662247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10817.

The product of its digits is 24192, while the sum is 34.

The square root of 61662247 is about 7852.5312479480. The cubic root of 61662247 is about 395.0691477513.

The spelling of 61662247 in words is "sixty-one million, six hundred sixty-two thousand, two hundred forty-seven".