64492785 has 48 divisors (see below), whose sum is σ = 130201344. Its totient is φ = 28918656.

The previous prime is 64492777. The next prime is 64492787. The reversal of 64492785 is 58729446.

64492785 = T₂₀₄ + T₂₀₅ + ... + T₇₃₃.

It is a happy number.

64492785 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 64492785 - 2³ = 64492777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 64492785.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64492787) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 14764 + ... + 18626.

It is an arithmetic number, because the mean of its divisors is an integer number (2712528).

Almost surely, 2^64492785 is an apocalyptic number.

It is an amenable number.

64492785 is an abundant number, since it is smaller than the sum of its proper divisors (65708559).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64492785 is a wasteful number, since it uses less digits than its factorization.

64492785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934 (or 3931 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 64492785 is about 8030.7400032625. The cubic root of 64492785 is about 401.0240116798.

The spelling of 64492785 in words is "sixty-four million, four hundred ninety-two thousand, seven hundred eighty-five".