61956783 has 12 divisors (see below), whose sum is σ = 102277968. Its totient is φ = 35403840.

The previous prime is 61956773. The next prime is 61956787. The reversal of 61956783 is 38765916.

It is a happy number.

61956783 is a `hidden beast` number, since 6 + 1 + 9 + 567 + 83 = 666.

It is not a de Polignac number, because 61956783 - 2⁴ = 61956767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61956787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491658 + ... + 491783.

It is an arithmetic number, because the mean of its divisors is an integer number (8523164).

Almost surely, 2^61956783 is an apocalyptic number.

61956783 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

61956783 is a deficient number, since it is larger than the sum of its proper divisors (40321185).

61956783 is a wasteful number, since it uses less digits than its factorization.

61956783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983454 (or 983451 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 61956783 is about 7871.2631133764. The cubic root of 61956783 is about 395.6971781938.

The spelling of 61956783 in words is "sixty-one million, nine hundred fifty-six thousand, seven hundred eighty-three".