615996045 has 24 divisors (see below), whose sum is σ = 1220259456. Its totient is φ = 281598048.

The previous prime is 615996023. The next prime is 615996067. The reversal of 615996045 is 540699516.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (615996023) and next prime (615996067).

It is not a de Polignac number, because 615996045 - 2⁹ = 615995533 is a prime.

It is a super-2 number, since 2×615996045² = 758902254911284050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 977457 + ... + 978086.

It is an arithmetic number, because the mean of its divisors is an integer number (50844144).

Almost surely, 2^615996045 is an apocalyptic number.

It is an amenable number.

615996045 is a deficient number, since it is larger than the sum of its proper divisors (604263411).

615996045 is a wasteful number, since it uses less digits than its factorization.

615996045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955561 (or 1955558 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 615996045 is about 24819.2676161083. The cubic root of 615996045 is about 850.8623520409.

The spelling of 615996045 in words is "six hundred fifteen million, nine hundred ninety-six thousand, forty-five".