61969628 has 12 divisors (see below), whose sum is σ = 123939312. Its totient is φ = 26558400.

The previous prime is 61969619. The next prime is 61969631. The reversal of 61969628 is 82696916.

61969628 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106573 + ... + 1106628.

It is an arithmetic number, because the mean of its divisors is an integer number (10328276).

Almost surely, 2^61969628 is an apocalyptic number.

It is an amenable number.

61969628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61969628 is a wasteful number, since it uses less digits than its factorization.

61969628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213212 (or 2213210 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 61969628 is about 7872.0790138311. The cubic root of 61969628 is about 395.7245218722.

The spelling of 61969628 in words is "sixty-one million, nine hundred sixty-nine thousand, six hundred twenty-eight".