61706401 has 4 divisors (see below), whose sum is σ = 64389312. Its totient is φ = 59023492.

The previous prime is 61706387. The next prime is 61706467. The reversal of 61706401 is 10460716.

It is a happy number.

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 61706401 - 2⁵ = 61706369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61706201) 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, 1341421 + ... + 1341466.

It is an arithmetic number, because the mean of its divisors is an integer number (16097328).

Almost surely, 2^61706401 is an apocalyptic number.

It is an amenable number.

61706401 is a deficient number, since it is larger than the sum of its proper divisors (2682911).

61706401 is a wasteful number, since it uses less digits than its factorization.

61706401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682910.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 61706401 is about 7855.3421949652. The cubic root of 61706401 is about 395.1634232712.

The spelling of 61706401 in words is "sixty-one million, seven hundred six thousand, four hundred one".