61804863 has 24 divisors (see below), whose sum is σ = 93195648. Its totient is φ = 40929624.

The previous prime is 61804819. The next prime is 61804867. The reversal of 61804863 is 36840816.

It is a happy number.

It is not a de Polignac number, because 61804863 - 2¹⁰ = 61803839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61804867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39820 + ... + 41342.

It is an arithmetic number, because the mean of its divisors is an integer number (3883152).

Almost surely, 2^61804863 is an apocalyptic number.

61804863 is a deficient number, since it is larger than the sum of its proper divisors (31390785).

61804863 is a wasteful number, since it uses less digits than its factorization.

61804863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1693 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 61804863 is about 7861.6068968119. The cubic root of 61804863 is about 395.3734928037.

The spelling of 61804863 in words is "sixty-one million, eight hundred four thousand, eight hundred sixty-three".