61674551 has 8 divisors (see below), whose sum is σ = 65194800. Its totient is φ = 58181760.

The previous prime is 61674533. The next prime is 61674553. The reversal of 61674551 is 15547616.

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-61674551 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 (61674553) 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, 2156 + ... + 11313.

It is an arithmetic number, because the mean of its divisors is an integer number (8149350).

Almost surely, 2^61674551 is an apocalyptic number.

61674551 is a deficient number, since it is larger than the sum of its proper divisors (3520249).

61674551 is a wasteful number, since it uses less digits than its factorization.

61674551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13729.

The product of its digits is 25200, while the sum is 35.

The square root of 61674551 is about 7853.3146505154. The cubic root of 61674551 is about 395.0954231886.

The spelling of 61674551 in words is "sixty-one million, six hundred seventy-four thousand, five hundred fifty-one".