61230990 has 16 divisors (see below), whose sum is σ = 146954448. Its totient is φ = 16328256.

The previous prime is 61230979. The next prime is 61231019. The reversal of 61230990 is 9903216.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2041033 = 61230990 / (6 + 1 + 2 + 3 + 0 + 9 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020487 + ... + 1020546.

It is an arithmetic number, because the mean of its divisors is an integer number (9184653).

Almost surely, 2^61230990 is an apocalyptic number.

61230990 is an abundant number, since it is smaller than the sum of its proper divisors (85723458).

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

61230990 is a wasteful number, since it uses less digits than its factorization.

61230990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041043.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 61230990 is about 7825.0233226489. The cubic root of 61230990 is about 394.1459730361.

The spelling of 61230990 in words is "sixty-one million, two hundred thirty thousand, nine hundred ninety".