61820301 has 4 divisors (see below), whose sum is σ = 82427072. Its totient is φ = 41213532.

The previous prime is 61820273. The next prime is 61820321. The reversal of 61820301 is 10302816.

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 not a de Polignac number, because 61820301 - 2⁷ = 61820173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61820321) 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, 10303381 + ... + 10303386.

It is an arithmetic number, because the mean of its divisors is an integer number (20606768).

Almost surely, 2^61820301 is an apocalyptic number.

It is an amenable number.

61820301 is a deficient number, since it is larger than the sum of its proper divisors (20606771).

61820301 is a wasteful number, since it uses less digits than its factorization.

61820301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20606770.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 61820301 is about 7862.5886958431. The cubic root of 61820301 is about 395.4064096733.

The spelling of 61820301 in words is "sixty-one million, eight hundred twenty thousand, three hundred one".