61210490 has 16 divisors (see below), whose sum is σ = 120195360. Its totient is φ = 22258320.

The previous prime is 61210477. The next prime is 61210493. The reversal of 61210490 is 9401216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61210493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278120 + ... + 278339.

It is an arithmetic number, because the mean of its divisors is an integer number (7512210).

Almost surely, 2^61210490 is an apocalyptic number.

61210490 is a deficient number, since it is larger than the sum of its proper divisors (58984870).

61210490 is a wasteful number, since it uses less digits than its factorization.

61210490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556477.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 61210490 is about 7823.7133127435. The cubic root of 61210490 is about 394.1019817264.

The spelling of 61210490 in words is "sixty-one million, two hundred ten thousand, four hundred ninety".