61663652 has 6 divisors (see below), whose sum is σ = 107911398. Its totient is φ = 30831824.

The previous prime is 61663649. The next prime is 61663669. The reversal of 61663652 is 25636616.

It can be written as a sum of positive squares in only one way, i.e., 32330596 + 29333056 = 5686^2 + 5416^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7707953 + ... + 7707960.

It is an arithmetic number, because the mean of its divisors is an integer number (17985233).

Almost surely, 2^61663652 is an apocalyptic number.

It is an amenable number.

61663652 is a deficient number, since it is larger than the sum of its proper divisors (46247746).

61663652 is a wasteful number, since it uses less digits than its factorization.

61663652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15415917 (or 15415915 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 61663652 is about 7852.6207090372. The cubic root of 61663652 is about 395.0721483336.

The spelling of 61663652 in words is "sixty-one million, six hundred sixty-three thousand, six hundred fifty-two".