61328616 has 32 divisors (see below), whose sum is σ = 154104000. Its totient is φ = 20338560.

The previous prime is 61328609. The next prime is 61328623. The reversal of 61328616 is 61682316.

It is an interprime number because it is at equal distance from previous prime (61328609) and next prime (61328623).

It is a super-2 number, since 2×61328616² = 7522398280950912, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 1645 + ... + 11196.

It is an arithmetic number, because the mean of its divisors is an integer number (4815750).

Almost surely, 2^61328616 is an apocalyptic number.

It is an amenable number.

61328616 is an abundant number, since it is smaller than the sum of its proper divisors (92775384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61328616 is a wasteful number, since it uses less digits than its factorization.

61328616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13049 (or 13045 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 61328616 is about 7831.2589026286. The cubic root of 61328616 is about 394.3553357719.

The spelling of 61328616 in words is "sixty-one million, three hundred twenty-eight thousand, six hundred sixteen".