61012216 has 16 divisors (see below), whose sum is σ = 118088640. Its totient is φ = 29521920.

The previous prime is 61012213. The next prime is 61012219. The reversal of 61012216 is 61221016.

It is an interprime number because it is at equal distance from previous prime (61012213) and next prime (61012219).

It is a junction number, because it is equal to n+sod(n) for n = 61012193 and 61012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61012213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122761 + ... + 123256.

It is an arithmetic number, because the mean of its divisors is an integer number (7380540).

It is the magic constant of a 496 × 496 magic square.

Almost surely, 2^61012216 is an apocalyptic number.

It is an amenable number.

61012216 is a deficient number, since it is larger than the sum of its proper divisors (57076424).

61012216 is a wasteful number, since it uses less digits than its factorization.

61012216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246054 (or 246050 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 61012216 is about 7811.0316860195. The cubic root of 61012216 is about 393.6759942883.

The spelling of 61012216 in words is "sixty-one million, twelve thousand, two hundred sixteen".