61764001 has 4 divisors (see below), whose sum is σ = 66515092. Its totient is φ = 57012912.

The previous prime is 61763987. The next prime is 61764013. The reversal of 61764001 is 10046716.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4004001 + 57760000 = 2001^2 + 7600^2 .

It is a cyclic number.

It is not a de Polignac number, because 61764001 - 2¹³ = 61755809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61764061) 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, 2375526 + ... + 2375551.

It is an arithmetic number, because the mean of its divisors is an integer number (16628773).

Almost surely, 2^61764001 is an apocalyptic number.

It is an amenable number.

61764001 is a deficient number, since it is larger than the sum of its proper divisors (4751091).

61764001 is a wasteful number, since it uses less digits than its factorization.

61764001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751090.

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

The square root of 61764001 is about 7859.0076345554. The cubic root of 61764001 is about 395.2863404740.

The spelling of 61764001 in words is "sixty-one million, seven hundred sixty-four thousand, one".