661546054 has 16 divisors (see below), whose sum is σ = 1069285392. Its totient is φ = 305147808.

The previous prime is 661546003. The next prime is 661546063. The reversal of 661546054 is 450645166.

661546054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 43677 + ... + 56839.

It is an arithmetic number, because the mean of its divisors is an integer number (66830337).

Almost surely, 2^661546054 is an apocalyptic number.

661546054 is a deficient number, since it is larger than the sum of its proper divisors (407739338).

661546054 is a wasteful number, since it uses less digits than its factorization.

661546054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15111.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 661546054 is about 25720.5375915823. The cubic root of 661546054 is about 871.3380801109.

The spelling of 661546054 in words is "six hundred sixty-one million, five hundred forty-six thousand, fifty-four".