61661414 has 16 divisors (see below), whose sum is σ = 98169408. Its totient is φ = 28947072.

The previous prime is 61661407. The next prime is 61661461. The reversal of 61661414 is 41416616.

It is a super-3 number, since 3×61661414³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13784 + ... + 17700.

It is an arithmetic number, because the mean of its divisors is an integer number (6135588).

Almost surely, 2^61661414 is an apocalyptic number.

61661414 is a deficient number, since it is larger than the sum of its proper divisors (36507994).

61661414 is a wasteful number, since it uses less digits than its factorization.

61661414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4399.

The product of its digits is 3456, while the sum is 29.

The square root of 61661414 is about 7852.4782075470. The cubic root of 61661414 is about 395.0673687369.

The spelling of 61661414 in words is "sixty-one million, six hundred sixty-one thousand, four hundred fourteen".