61662340 has 24 divisors (see below), whose sum is σ = 129790080. Its totient is φ = 24607968.

The previous prime is 61662331. The next prime is 61662347. The reversal of 61662340 is 4326616.

It is a junction number, because it is equal to n+sod(n) for n = 61662299 and 61662308.

It is not an unprimeable number, because it can be changed into a prime (61662347) 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, 5931 + ... + 12589.

It is an arithmetic number, because the mean of its divisors is an integer number (5407920).

Almost surely, 2^61662340 is an apocalyptic number.

It is an amenable number.

61662340 is an abundant number, since it is smaller than the sum of its proper divisors (68127740).

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

61662340 is a wasteful number, since it uses less digits than its factorization.

61662340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7131 (or 7129 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 61662340 is about 7852.5371696032. The cubic root of 61662340 is about 395.0693463678.

Adding to 61662340 its reverse (4326616), we get a palindrome (65988956).

The spelling of 61662340 in words is "sixty-one million, six hundred sixty-two thousand, three hundred forty".