61216485 has 32 divisors (see below), whose sum is σ = 109468800. Its totient is φ = 28953600.

The previous prime is 61216483. The next prime is 61216523. The reversal of 61216485 is 58461216.

61216485 = T₂₇₉ + T₂₈₀ + ... + T₇₂₉.

It is not a de Polignac number, because 61216485 - 2¹ = 61216483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61216481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2241 + ... + 11289.

It is an arithmetic number, because the mean of its divisors is an integer number (3420900).

Almost surely, 2^61216485 is an apocalyptic number.

It is an amenable number.

61216485 is a deficient number, since it is larger than the sum of its proper divisors (48252315).

61216485 is a wasteful number, since it uses less digits than its factorization.

61216485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9109.

The product of its digits is 11520, while the sum is 33.

The square root of 61216485 is about 7824.0964334548. The cubic root of 61216485 is about 394.1148475181.

The spelling of 61216485 in words is "sixty-one million, two hundred sixteen thousand, four hundred eighty-five".