61674557 has 8 divisors (see below), whose sum is σ = 70540800. Its totient is φ = 52822224.

The previous prime is 61674553. The next prime is 61674559. The reversal of 61674557 is 75547616.

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

It is not a de Polignac number, because 61674557 - 2² = 61674553 is a prime.

It is a super-2 number, since 2×61674557² = 7607501962292498, 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 (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, 9044 + ... + 14322.

It is an arithmetic number, because the mean of its divisors is an integer number (8817600).

Almost surely, 2^61674557 is an apocalyptic number.

It is an amenable number.

61674557 is a deficient number, since it is larger than the sum of its proper divisors (8866243).

61674557 is a wasteful number, since it uses less digits than its factorization.

61674557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6955.

The product of its digits is 176400, while the sum is 41.

The square root of 61674557 is about 7853.3150325197. The cubic root of 61674557 is about 395.0954360009.

The spelling of 61674557 in words is "sixty-one million, six hundred seventy-four thousand, five hundred fifty-seven".