61654961 has 4 divisors (see below), whose sum is σ = 62063424. Its totient is φ = 61246500.

The previous prime is 61654933. The next prime is 61654963. The reversal of 61654961 is 16945616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61654961 - 2²² = 57460657 is a prime.

It is a super-3 number, since 3×61654961³ (a number of 24 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a pancake number, because a pancake can be divided into 61654961 parts by 11104 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61654963) 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, 204005 + ... + 204306.

It is an arithmetic number, because the mean of its divisors is an integer number (15515856).

Almost surely, 2^61654961 is an apocalyptic number.

It is an amenable number.

61654961 is a deficient number, since it is larger than the sum of its proper divisors (408463).

61654961 is a wasteful number, since it uses less digits than its factorization.

61654961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408462.

The product of its digits is 38880, while the sum is 38.

The square root of 61654961 is about 7852.0673074038. The cubic root of 61654961 is about 395.0535867053.

The spelling of 61654961 in words is "sixty-one million, six hundred fifty-four thousand, nine hundred sixty-one".