61764121 has 8 divisors (see below), whose sum is σ = 64226304. Its totient is φ = 59331360.

The previous prime is 61764097. The next prime is 61764127. The reversal of 61764121 is 12146716.

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

It is a cyclic number.

It is not a de Polignac number, because 61764121 - 2¹³ = 61755929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61764121.

It is not an unprimeable number, because it can be changed into a prime (61764127) 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, 3025 + ... + 11518.

It is an arithmetic number, because the mean of its divisors is an integer number (8028288).

Almost surely, 2^61764121 is an apocalyptic number.

It is an amenable number.

61764121 is a deficient number, since it is larger than the sum of its proper divisors (2462183).

61764121 is a wasteful number, since it uses less digits than its factorization.

61764121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14711.

The product of its digits is 2016, while the sum is 28.

The square root of 61764121 is about 7859.0152691034. The cubic root of 61764121 is about 395.2865964717.

The spelling of 61764121 in words is "sixty-one million, seven hundred sixty-four thousand, one hundred twenty-one".