61619652 has 36 divisors (see below), whose sum is σ = 159973996. Its totient is φ = 19984320.

The previous prime is 61619651. The next prime is 61619653. The reversal of 61619652 is 25691616.

It is an interprime number because it is at equal distance from previous prime (61619651) and next prime (61619653).

It can be written as a sum of positive squares in 2 ways, for example, as 59351616 + 2268036 = 7704^2 + 1506^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×61619652² = 7593963025202208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61619651) 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, 21799 + ... + 24462.

Almost surely, 2^61619652 is an apocalyptic number.

It is an amenable number.

61619652 is an abundant number, since it is smaller than the sum of its proper divisors (98354344).

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

61619652 is a wasteful number, since it uses less digits than its factorization.

61619652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46308 (or 46303 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 61619652 is about 7849.8185966301. The cubic root of 61619652 is about 394.9781582753.

Subtracting from 61619652 its reverse (25691616), we obtain a square (35928036 = 5994²).

The spelling of 61619652 in words is "sixty-one million, six hundred nineteen thousand, six hundred fifty-two".