61656554 has 8 divisors (see below), whose sum is σ = 92540448. Its totient is φ = 30809740.

The previous prime is 61656547. The next prime is 61656559. The reversal of 61656554 is 45565616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61656559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4652 + ... + 12039.

It is an arithmetic number, because the mean of its divisors is an integer number (11567556).

Almost surely, 2^61656554 is an apocalyptic number.

61656554 is a deficient number, since it is larger than the sum of its proper divisors (30883894).

61656554 is a wasteful number, since it uses less digits than its factorization.

61656554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18540.

The product of its digits is 108000, while the sum is 38.

The square root of 61656554 is about 7852.1687450029. The cubic root of 61656554 is about 395.0569890535.

The spelling of 61656554 in words is "sixty-one million, six hundred fifty-six thousand, five hundred fifty-four".