61894 has 8 divisors (see below), whose sum is σ = 106128. Its totient is φ = 26520.

The previous prime is 61879. The next prime is 61909. The reversal of 61894 is 49816.

61894 = T₅₂ + T₅₃ + ... + T₇₉.

It is an interprime number because it is at equal distance from previous prime (61879) and next prime (61909).

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

61894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2197 + ... + 2224.

It is an arithmetic number, because the mean of its divisors is an integer number (13266).

2⁶¹⁸⁹⁴ is an apocalyptic number.

61894 is a deficient number, since it is larger than the sum of its proper divisors (44234).

61894 is a wasteful number, since it uses less digits than its factorization.

61894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430.

The product of its digits is 1728, while the sum is 28.

The square root of 61894 is about 248.7850477822. The cubic root of 61894 is about 39.5563475039.

The spelling of 61894 in words is "sixty-one thousand, eight hundred ninety-four".