61266401 has 8 divisors (see below), whose sum is σ = 70181760. Its totient is φ = 52391808.

The previous prime is 61266391. The next prime is 61266421. The reversal of 61266401 is 10466216.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-61266401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61266421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6896 + ... + 13041.

It is an arithmetic number, because the mean of its divisors is an integer number (8772720).

Almost surely, 2^61266401 is an apocalyptic number.

It is an amenable number.

61266401 is a deficient number, since it is larger than the sum of its proper divisors (8915359).

61266401 is a wasteful number, since it uses less digits than its factorization.

61266401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20383.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 61266401 is about 7827.2856725687. The cubic root of 61266401 is about 394.2219389991.

The spelling of 61266401 in words is "sixty-one million, two hundred sixty-six thousand, four hundred one".