61894761 has 8 divisors (see below), whose sum is σ = 86869920. Its totient is φ = 39091392.

The previous prime is 61894741. The next prime is 61894823. The reversal of 61894761 is 16749816.

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

It is not a de Polignac number, because 61894761 - 2¹³ = 61886569 is a prime.

It is a super-2 number, since 2×61894761² = 7661922878494242, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (61894711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542880 + ... + 542993.

It is an arithmetic number, because the mean of its divisors is an integer number (10858740).

Almost surely, 2^61894761 is an apocalyptic number.

It is an amenable number.

61894761 is a deficient number, since it is larger than the sum of its proper divisors (24975159).

61894761 is a wasteful number, since it uses less digits than its factorization.

61894761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085895.

The product of its digits is 72576, while the sum is 42.

The square root of 61894761 is about 7867.3223526178. The cubic root of 61894761 is about 395.5650962112.

The spelling of 61894761 in words is "sixty-one million, eight hundred ninety-four thousand, seven hundred sixty-one".