61820956 has 6 divisors (see below), whose sum is σ = 108186680. Its totient is φ = 30910476.

The previous prime is 61820929. The next prime is 61820977. The reversal of 61820956 is 65902816.

61820956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7727616 + ... + 7727623.

Almost surely, 2^61820956 is an apocalyptic number.

It is an amenable number.

61820956 is a deficient number, since it is larger than the sum of its proper divisors (46365724).

61820956 is a wasteful number, since it uses less digits than its factorization.

61820956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15455243 (or 15455241 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 61820956 is about 7862.6303486810. The cubic root of 61820956 is about 395.4078061416.

The spelling of 61820956 in words is "sixty-one million, eight hundred twenty thousand, nine hundred fifty-six".