61077090 has 32 divisors (see below), whose sum is σ = 155208960. Its totient is φ = 15329024.

The previous prime is 61077089. The next prime is 61077091. The reversal of 61077090 is 9077016.

It is an interprime number because it is at equal distance from previous prime (61077089) and next prime (61077091).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (61077091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59370 + ... + 60389.

It is an arithmetic number, because the mean of its divisors is an integer number (4850280).

Almost surely, 2^61077090 is an apocalyptic number.

61077090 is an abundant number, since it is smaller than the sum of its proper divisors (94131870).

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

61077090 is a wasteful number, since it uses less digits than its factorization.

61077090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119786.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 61077090 is about 7815.1832991939. The cubic root of 61077090 is about 393.8154761359.

The spelling of 61077090 in words is "sixty-one million, seventy-seven thousand, ninety".