615442061 has 12 divisors (see below), whose sum is σ = 671536800. Its totient is φ = 563743440.

The previous prime is 615442043. The next prime is 615442063. The reversal of 615442061 is 160244516.

It is not a de Polignac number, because 615442061 - 2²² = 611247757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615442063) 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, 8240 + ... + 36038.

It is an arithmetic number, because the mean of its divisors is an integer number (55961400).

Almost surely, 2^615442061 is an apocalyptic number.

It is an amenable number.

615442061 is a deficient number, since it is larger than the sum of its proper divisors (56094739).

615442061 is a wasteful number, since it uses less digits than its factorization.

615442061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27956 (or 27943 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 615442061 is about 24808.1047442162. The cubic root of 615442061 is about 850.6072067318.

Adding to 615442061 its reverse (160244516), we get a palindrome (775686577).

The spelling of 615442061 in words is "six hundred fifteen million, four hundred forty-two thousand, sixty-one".