61764541 has 4 divisors (see below), whose sum is σ = 61784800. Its totient is φ = 61744284.

The previous prime is 61764539. The next prime is 61764551. The reversal of 61764541 is 14546716.

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 61764541 - 2¹ = 61764539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61764497 and 61764506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61764551) 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, 4521 + ... + 11998.

It is an arithmetic number, because the mean of its divisors is an integer number (15446200).

Almost surely, 2^61764541 is an apocalyptic number.

It is an amenable number.

61764541 is a deficient number, since it is larger than the sum of its proper divisors (20259).

61764541 is a wasteful number, since it uses less digits than its factorization.

61764541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20258.

The product of its digits is 20160, while the sum is 34.

The square root of 61764541 is about 7859.0419899629. The cubic root of 61764541 is about 395.2874924611.

The spelling of 61764541 in words is "sixty-one million, seven hundred sixty-four thousand, five hundred forty-one".