61694464 has 120 divisors (see below), whose sum is σ = 143776512. Its totient is φ = 26357760.

The previous prime is 61694461. The next prime is 61694467. The reversal of 61694464 is 46449616.

It is an interprime number because it is at equal distance from previous prime (61694461) and next prime (61694467).

It is not an unprimeable number, because it can be changed into a prime (61694461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1990129 + ... + 1990159.

Almost surely, 2^61694464 is an apocalyptic number.

61694464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61694464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71888256).

61694464 is an abundant number, since it is smaller than the sum of its proper divisors (82082048).

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

61694464 is a wasteful number, since it uses less digits than its factorization.

61694464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 69 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 61694464 is about 7854.5823568157. The cubic root of 61694464 is about 395.1379403936.

The spelling of 61694464 in words is "sixty-one million, six hundred ninety-four thousand, four hundred sixty-four".