61520654 has 16 divisors (see below), whose sum is σ = 105226128. Its totient is φ = 26723712.

The previous prime is 61520611. The next prime is 61520663. The reversal of 61520654 is 45602516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69152 + ... + 70035.

It is an arithmetic number, because the mean of its divisors is an integer number (6576633).

Almost surely, 2^61520654 is an apocalyptic number.

61520654 is a deficient number, since it is larger than the sum of its proper divisors (43705474).

61520654 is a wasteful number, since it uses less digits than its factorization.

61520654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139219.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 61520654 is about 7843.5103110788. The cubic root of 61520654 is about 394.7665212105.

The spelling of 61520654 in words is "sixty-one million, five hundred twenty thousand, six hundred fifty-four".