60820649 has 4 divisors (see below), whose sum is σ = 61447764. Its totient is φ = 60193536.

The previous prime is 60820609. The next prime is 60820651. The reversal of 60820649 is 94602806.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94602806 = 2 ⋅47301403.

It can be written as a sum of positive squares in 2 ways, for example, as 17682025 + 43138624 = 4205^2 + 6568^2 .

It is a cyclic number.

It is not a de Polignac number, because 60820649 - 2⁸ = 60820393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60820609) 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, 313412 + ... + 313605.

It is an arithmetic number, because the mean of its divisors is an integer number (15361941).

Almost surely, 2^60820649 is an apocalyptic number.

It is an amenable number.

60820649 is a deficient number, since it is larger than the sum of its proper divisors (627115).

60820649 is an equidigital number, since it uses as much as digits as its factorization.

60820649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627114.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 60820649 is about 7798.7594526309. The cubic root of 60820649 is about 393.2635391979.

The spelling of 60820649 in words is "sixty million, eight hundred twenty thousand, six hundred forty-nine".