61602390 has 64 divisors (see below), whose sum is σ = 173949120. Its totient is φ = 15459840.

The previous prime is 61602379. The next prime is 61602397. The reversal of 61602390 is 9320616.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61602397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2121 + ... + 11300.

It is an arithmetic number, because the mean of its divisors is an integer number (2717955).

Almost surely, 2^61602390 is an apocalyptic number.

61602390 is an abundant number, since it is smaller than the sum of its proper divisors (112346730).

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

61602390 is a wasteful number, since it uses less digits than its factorization.

61602390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13454 (or 13448 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 61602390 is about 7848.7190037611. The cubic root of 61602390 is about 394.9412720465.

The spelling of 61602390 in words is "sixty-one million, six hundred two thousand, three hundred ninety".