61002865 has 16 divisors (see below), whose sum is σ = 91267200. Its totient is φ = 38027520.

The previous prime is 61002857. The next prime is 61002911. The reversal of 61002865 is 56820016.

61002865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61002865 - 2³ = 61002857 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78840 + ... + 79609.

It is an arithmetic number, because the mean of its divisors is an integer number (5704200).

Almost surely, 2^61002865 is an apocalyptic number.

It is an amenable number.

61002865 is a deficient number, since it is larger than the sum of its proper divisors (30264335).

61002865 is a wasteful number, since it uses less digits than its factorization.

61002865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158472.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 61002865 is about 7810.4330865836. The cubic root of 61002865 is about 393.6558810905.

The spelling of 61002865 in words is "sixty-one million, two thousand, eight hundred sixty-five".