61247669 has 8 divisors (see below), whose sum is σ = 70045248. Its totient is φ = 52462080.

The previous prime is 61247663. The next prime is 61247671. The reversal of 61247669 is 96674216.

61247669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61247669 is a prime.

It is a super-2 number, since 2×61247669² = 7502553915867122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61247663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15989 + ... + 19445.

It is an arithmetic number, because the mean of its divisors is an integer number (8755656).

Almost surely, 2^61247669 is an apocalyptic number.

It is an amenable number.

61247669 is a deficient number, since it is larger than the sum of its proper divisors (8797579).

61247669 is a wasteful number, since it uses less digits than its factorization.

61247669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5995.

The product of its digits is 108864, while the sum is 41.

The square root of 61247669 is about 7826.0889977050. The cubic root of 61247669 is about 394.1817575512.

It can be divided in two parts, 61247 and 669, that added together give a palindrome (61916).

The spelling of 61247669 in words is "sixty-one million, two hundred forty-seven thousand, six hundred sixty-nine".