61653268 has 12 divisors (see below), whose sum is σ = 107956660. Its totient is φ = 30808512.

The previous prime is 61653239. The next prime is 61653269. The reversal of 61653268 is 86235616.

It can be written as a sum of positive squares in 2 ways, for example, as 4318084 + 57335184 = 2078^2 + 7572^2 .

It is a super-2 number, since 2×61653268² = 7602250910159648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61653269) 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 3 ways as a sum of consecutive naturals, for example, 5680 + ... + 12472.

Almost surely, 2^61653268 is an apocalyptic number.

It is an amenable number.

61653268 is a deficient number, since it is larger than the sum of its proper divisors (46303392).

61653268 is a wasteful number, since it uses less digits than its factorization.

61653268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9066 (or 9064 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 61653268 is about 7851.9595006597. The cubic root of 61653268 is about 395.0499707116.

The spelling of 61653268 in words is "sixty-one million, six hundred fifty-three thousand, two hundred sixty-eight".