61606428 has 48 divisors (see below), whose sum is σ = 155302560. Its totient is φ = 18895104.

The previous prime is 61606421. The next prime is 61606439. The reversal of 61606428 is 82460616.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61606421) by changing a digit.

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, 86538 + ... + 87246.

It is an arithmetic number, because the mean of its divisors is an integer number (3235470).

Almost surely, 2^61606428 is an apocalyptic number.

It is an amenable number.

61606428 is an abundant number, since it is smaller than the sum of its proper divisors (93696132).

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

61606428 is a wasteful number, since it uses less digits than its factorization.

61606428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 61606428 is about 7848.9762389754. The cubic root of 61606428 is about 394.9499012464.

The spelling of 61606428 in words is "sixty-one million, six hundred six thousand, four hundred twenty-eight".