61402653 has 24 divisors (see below), whose sum is σ = 96681312. Its totient is φ = 37325088.

The previous prime is 61402651. The next prime is 61402669. The reversal of 61402653 is 35620416.

61402653 is a `hidden beast` number, since 6 + 1 + 4 + 0 + 2 + 653 = 666.

It is not a de Polignac number, because 61402653 - 2¹ = 61402651 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61402651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6550 + ... + 12872.

It is an arithmetic number, because the mean of its divisors is an integer number (4028388).

Almost surely, 2^61402653 is an apocalyptic number.

It is an amenable number.

61402653 is a deficient number, since it is larger than the sum of its proper divisors (35278659).

61402653 is a wasteful number, since it uses less digits than its factorization.

61402653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425 (or 6422 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 61402653 is about 7835.9844946248. The cubic root of 61402653 is about 394.5139628902.

The spelling of 61402653 in words is "sixty-one million, four hundred two thousand, six hundred fifty-three".