61223638 has 12 divisors (see below), whose sum is σ = 106829172. Its totient is φ = 26238660.

The previous prime is 61223627. The next prime is 61223683. The reversal of 61223638 is 83632216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312268 + ... + 312463.

It is an arithmetic number, because the mean of its divisors is an integer number (8902431).

Almost surely, 2^61223638 is an apocalyptic number.

61223638 is a deficient number, since it is larger than the sum of its proper divisors (45605534).

61223638 is a wasteful number, since it uses less digits than its factorization.

61223638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624747 (or 624740 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 61223638 is about 7824.5535335890. The cubic root of 61223638 is about 394.1301973797.

The spelling of 61223638 in words is "sixty-one million, two hundred twenty-three thousand, six hundred thirty-eight".