61890766 has 8 divisors (see below), whose sum is σ = 106098480. Its totient is φ = 26524608.

The previous prime is 61890757. The next prime is 61890779. The reversal of 61890766 is 66709816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210371 + ... + 2210398.

It is an arithmetic number, because the mean of its divisors is an integer number (13262310).

Almost surely, 2^61890766 is an apocalyptic number.

61890766 is a deficient number, since it is larger than the sum of its proper divisors (44207714).

61890766 is a wasteful number, since it uses less digits than its factorization.

61890766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420778.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 61890766 is about 7867.0684501916. The cubic root of 61890766 is about 395.5565854394.

The spelling of 61890766 in words is "sixty-one million, eight hundred ninety thousand, seven hundred sixty-six".