61974669 has 4 divisors (see below), whose sum is σ = 82632896. Its totient is φ = 41316444.

The previous prime is 61974629. The next prime is 61974677. The reversal of 61974669 is 96647916.

61974669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61974669 - 2⁷ = 61974541 is a prime.

It is a super-2 number, since 2×61974669² = 7681719195319122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61974629) 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 3 ways as a sum of consecutive naturals, for example, 10329109 + ... + 10329114.

It is an arithmetic number, because the mean of its divisors is an integer number (20658224).

Almost surely, 2^61974669 is an apocalyptic number.

It is an amenable number.

61974669 is a deficient number, since it is larger than the sum of its proper divisors (20658227).

61974669 is a wasteful number, since it uses less digits than its factorization.

61974669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20658226.

The product of its digits is 489888, while the sum is 48.

The square root of 61974669 is about 7872.3991895737. The cubic root of 61974669 is about 395.7352518232.

The spelling of 61974669 in words is "sixty-one million, nine hundred seventy-four thousand, six hundred sixty-nine".