61219146 has 32 divisors (see below), whose sum is σ = 128153088. Its totient is φ = 19459440.

The previous prime is 61219139. The next prime is 61219153. The reversal of 61219146 is 64191216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61219139) and next prime (61219153).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75081 + ... + 75891.

It is an arithmetic number, because the mean of its divisors is an integer number (4004784).

Almost surely, 2^61219146 is an apocalyptic number.

61219146 is an abundant number, since it is smaller than the sum of its proper divisors (66933942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61219146 is a wasteful number, since it uses less digits than its factorization.

61219146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its digits is 2592, while the sum is 30.

The square root of 61219146 is about 7824.2664831919. The cubic root of 61219146 is about 394.1205579865.

The spelling of 61219146 in words is "sixty-one million, two hundred nineteen thousand, one hundred forty-six".