61628156 has 6 divisors (see below), whose sum is σ = 107849280. Its totient is φ = 30814076.

The previous prime is 61628143. The next prime is 61628167. The reversal of 61628156 is 65182616.

It is a happy number.

It is a super-2 number, since 2×61628156² = 7596059223920672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7703516 + ... + 7703523.

It is an arithmetic number, because the mean of its divisors is an integer number (17974880).

Almost surely, 2^61628156 is an apocalyptic number.

It is an amenable number.

61628156 is a deficient number, since it is larger than the sum of its proper divisors (46221124).

61628156 is a wasteful number, since it uses less digits than its factorization.

61628156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15407043 (or 15407041 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 61628156 is about 7850.3602465110. The cubic root of 61628156 is about 394.9963274775.

The spelling of 61628156 in words is "sixty-one million, six hundred twenty-eight thousand, one hundred fifty-six".